I agree the 400 does handle better on jumps and faster trails. I am no Pro. but I think the 300 handles better on slower tighter trails. It is smaller in length and width and has softer suspension. Just my opinion.

 

get the 400ex, its better all around and theres more aftermarket parts available for it, also, the 400ex just performs better and has more power, as for reverse, i dont mind not having it, i just have to get off and push whenever i need to back up or i sit down and walk it like a motorcycle but if you're gonna buy something new and you want power and reverse, get a z400, its better than the 400ex and the 300ex, not that they're bad quas or anything, just getting outdated

yfz450, i cannot believe you were dumb enough to even reply to this post! you know nothing about honda quads let alone your own quad which i doubt you have