Currently the best ds flashcart for playing ds games on your 3ds and ds consoles is supercard dstwo, here are a few reasons why you should buy supercard dstwo for your 3ds and 3ds consoles.

Supercard dstwo provide the best features, compared to other r4 cards, dstwo offer many more features. it is the only one card which can play gba games on the 3ds and dsi console and ds consoles, if you want to play gba games on your 3ds console, supercard dstwo is the only choice.
it is also the only one card which support different formats of videos, pics and music. as we know that the normal r4 card can only support rpg format videos. but supercard dstwo can support all kinds of formats with its powerful plugins.

supercard dstwo has very good compatibility of games. it is used for playing ds games, gba games and also SNES games. it also has some other features such as real time save, real time cheat, real time menu, real time guide. slow motion, all these features would make your game experience more interesting.

supercard dstwo is also upgradable which is very important to users, when a new 3ds firmware comes out and block the flashcart, supercard dstwo can always release the update quickly and then you just need to update your supercard dstwo in a few mins and then use it again. with supercard dstwo, you don't need to buy a new card.

where to buy the best supercard dstwo card then

Currently the best site to buy supercard dstwo i recommend is this one: supercard dstwo free shipping with USPS fast shipping. great customer service.

dstwo is the best game card for both ds game and gba game fans.