Help! Me find my next laptop

Alright, so I am in the market for a new laptop and I am looking to all of you for some advice. I have been shopping around on newegg, bestbuy, office depot, etc.. but have not settled on anything just yet.

I am looking in the $500-$650 range and would like to know what laptop you think is the most bang for my buck. I have always prefered Asus or Lenovo, but I am not locked into either.