Accountants In The House!

My accountant brothers in the house, I need assistance with an academic project that I am doing now. Can someone advice me on the best ratios to apply in the analysis of a company that is a 'take-over target'? I don't want to spend too much time using irrelevant ratios. I have access to the annual reports of several companies spanning several years. I will be happy to hear from you guys soon.
Thanks.