i say the honda. They are amazing quality and why get a suzuki that ure gona end up spending mony on parts because it breaks down alot compared to a honda, where u can just spend ure time and money on upgrading it. The speed difference really isnt too noticeable and besides the 400ex has better acceleration from gears 1-3. On most tracks u never hit the middle or top of 5th, and the tracks i race on, i only hit 4th. I would get the honda and not spend ure time on a suzuki. What type of track r u racing on? A curvy one or a track with a bunch of straights?