350 goes about 60 top end. Wouldn't want to go faster on one. The 700 has longer wheel base, a bit wider stance, and is heavire. Better for going faster. My brothers has been up around 90, but that is too scary for me. 700 is a much better ride for long trips, more power than you will ever use. 350 is better at tight trails, but the 700 can muscle thru tough stuff to compensate. For really great riding, I say the 700 isn't worth the extra 2,500. The 350 is better for trick riding too. (my 2 cents)