i have heared many different opinions on this, which one can really accelerate faster?

 

Depends on what you got on 'em. If I were gonna take a guess, I'd say the 250X would be faster all around. I had a buddy that had one and it was pretty quick and easy to handle.

 

According to one of the mags the 250EX was a little quicker, but the Lakota was a little faster on the top end. You are probably talking marginal differances in both acceleration and top speed. Anyone who tells you different is full of it, assuming both quads are stock.