one bad thing is only the 05 and up on 400ex have rev the 99 to 04 dont ,i ve owned three warriors and i love them my friend owns a 400ex ive ridden his i like but not as much as my warrior i also get to laugh at him when he gets stuck and needs rev but dosent have it lol

 

id definatley take the warrior simply because its a YAMAHA, and it has way less valve problems and axle/suspension problems then the ex (bends axles alot due to improper swingarm angle). PLUS its a better trail machine. If ur gonna be on the track alot well then maybe take a look at the 400, its gonna have a fair amount more power and mods out for it too, but make sure you get a better axle or atleast be prepared to (like a durablue or comprable).

 

honda for sure

 

Im a yamaha fan...even owning a warrior. It has a bullet proof motor and the rest of the quad is extremely reliable. But the honda is too. If you have them both at the same price, buy the 400ex. Jus a better quad all around.