Personally, i think Sony makes the best of laptops. They may be slightly more expensive, but when it comes to quality, durability, composition & aesthetics; give it to Sony. What more am i looking for in a Laptop?!?!

wrong! on those specs, Apple beats Sony and everyone else.
every Wintel laptop has severe limitations in that all innovations most revolve around Windows. PC manufacturers in the windows world can only add one or two "features" or colors or artwork to entice people into buying. therefore, your HPs and Dells and Toshibas and Emachines (fomerly Gateway), Lenovos (fomerly IBM) can only build the hardware, incorporate standard buses and peripherals (USB etc) and then wait for Microsoft to provide the innovation. this means that all these wintel OEMs are at the mercy of Bill Gates and co.
therefore the issue of "best laptop" among these machines is questionable: mostly the arguments FOR and AGAINST revolve around manufacturer support, build durability, battery life (mind you, third parties build the batteries as well as much else in these machines), color, and artwork on the casing.
all the above are hardly "performance innovations" and subject the yardsticks to very flexible interpretations; to A, engraving and a choice of case colors make a certain product the best; to B, number of USB ports and screen real estate translates as best.
see the limitations on the wintel laptops?
now lets come to what i generally consider the "best" laptops: Apple Macbook series.
its no secret i favor Apple, but the reasons arent farfethced. consider this: while the rest of the Wintel OEMs are shackled to the whims of Microsoft and Windows and have to tailor their products in accordance with the dictates of Windows, Apple is free from this restraint because Apple makes both machine and the softare that goes into it. therefore Apple can afford to innovate the hardware and software (the OS and most of the apps).
Apple, because it builds and owns its operating system, is able to tweak the OS such that it fits the hardware like a glove, and what you get is a near seamless, enjoyable and productive computing.
lately the Macbook and the Pro have had the following innovations/features:
1. Precision Unibody enclosures, which means the machine is built from a solid aluminum block and cut by lasers. this makes it durable, sleek, and attractive.
2. Magsafe powercord. pull heavily on the cord and the sensor detects the force and quickly snaps the cord free, meaning you can't trip over the cord and smash the laptop.
3. two nvidia GPUs. TWO! (Nvidia 9400M and 9600M GT)
4. LED-backlit displays.
5. ultrathin glossy screens.
6. backlit keyboards.
7. Mini DisplayPort connector for the best possible High Def output
8. glass button-less multitouch trackpad.
now there has always been disputes here in Nairaland regarding the superiority or otherwise of OS X over Windows Vista. Thankfully this dispute rages only here, as much of the informed world knows the better OS.
granted OS X has its share of bugs, but its still much more stable, easy, faster than Windows. and you get daily updates by Apple. Also, software packages for graphics work (like Quark), Photos (Aperture), Office work (PAges, Numbers, Keynote), music (garageband), video editing/effects (Final Cut) and even Microsoft Office 2008 (including Microsoft Entourage which isnt on Windows) are far better and easier on the Mac than on Winodws.
and it only gets better: snow leopard set to be released january 2009 is to have the following features:
1. Microsoft Exchange Support
Snow Leopard includes out-of-the-box support for Microsoft Exchange 2007 built into Mail, Address Book, and iCal. Mac OS X uses the Exchange Web Services protocol to provide access to Exchange Server 2007. Because Exchange is supported on your Mac and iPhone, you’ll be able to use them anywhere with full access to your email, contacts, and calendar.
2. To accommodate the enormous amounts of memory being added to advanced hardware, Snow Leopard extends the 64-bit technology in Mac OS X to support breakthrough amounts of RAM — up to a theoretical 16TB, or 500 times more than what is possible today. More RAM makes applications run faster, because more of their data can be kept in the very fast physical RAM instead of on the much slower hard disk.
3. Multicore
“Grand Central,” a new set of technologies built into Snow Leopard, brings unrivaled support for multicore systems to Mac OS X. More cores, not faster clock speeds, drive performance increases in today’s processors. Grand Central takes full advantage by making all of Mac OS X multicore aware and optimizing it for allocating tasks across multiple cores and processors. Grand Central also makes it much easier for developers to create programs that squeeze every last drop of power from multicore systems.
4. OpenCL
Another powerful Snow Leopard technology, OpenCL (Open Computing Language), makes it possible for developers to efficiently tap the vast gigaflops of computing power currently locked up in the graphics processing unit (GPU). With GPUs approaching processing speeds of a trillion operations per second, they’re capable of considerably more than just drawing pictures. OpenCL takes that power and redirects it for general-purpose computing.
5. Media and Internet
Using media technology pioneered in OS X iPhone, Snow Leopard introduces QuickTime X, a streamlined, next-generation platform that advances modern media and Internet standards. QuickTime X features optimized support for modern codecs and more efficient media playback, making it ideal for any application that needs to play media content.
Because Snow Leopard delivers the fastest implementation of JavaScript to date, web applications are more responsive. Safari runs JavaScript up to 53 percent faster with Snow Leopard.
so while the rest of the pc industry waits on Microsoft to provide compelling new features, Apple is miles ahead.
granted the machines are a bit expensive, but save for the rubbish Macbook Air (which thankfully has been updated) the cost-perfromance ratio is similar to what obtains on most wintel machines. that is to say, any wintel machine with 2 nvidia discrete GPUS, 802.11n, core 2 duo 2.8ghz and 2 gigs of RAM running at 1066mhz (most wintels are in the 600mhz800mhz- range), 1066mhz FSB and upto 6mb of shared L2 cache will no doubt be expensive!
but its good value for money.
sure there are more apps on Windows than on OS X, but thats because there are more Windows machines; besides everything one needs is available on Mac, most times in better form. and you have the added bonus of being able to run Windows natively on Mac machines. you can't run OS X on a non-Apple machine without advanced trickery and hacks
we cannot really blame the Hps and Dells and Sonys: Microsoft owns Windows and licenses it to them, therefore any stagnation in the OS in these machines is the fault of MS.
there are strong indications that Google is working on its own OS, as is HP. hopefully they'll vary the field and force MS to innovate and try to be on a par with OS X.
so in sum, "best laptop" is dependent on a number of factors; in the PC/Wintel world, those factors are few and far between.