the Trx400ex is definitely the most reliable, you're gonna have to beat that quad pretty hard to break something. On other hand, the lt-z400 is faster. i have a buddy who has both these quads and he said the suzuki would beat the honda anytime. I would stay away around the raptor, its slower, sits lower, and i personally don't like the way they look. I'd say the Lt-z400 is the best choice, its gonna be my next quad, we'll say that.