Hi, just some quick questions. Please write something that's useful.
Which one is better to do wheelies and jumps etc?
And which has better lowrange and durability?

 

I'd say they're about the same at jumping/wheelies. They both have nice suspension, so landings aren't an issue. As for low-end, the Honda has it beat, but they're both trail machines so low-end isn't an issue. As for durability the Honda wins there, very durable machine, Honda is a master with air-cooled engines. The Z400 is more powerful, but not nearly as durable. With all that said, the Honda is my choice, hope this helps.

 

Some say, that the Honda sucks at fast riding compared to the LTZ 400. Why is that? the width of it, or?

 

The Z has a much more modern motor and much better suspension vs the X. The Z is capable of putting out 450 class power when properly modified, the X is not. That is why it is does better at higher speeds.

 

With a little modification on either of their weaknesses, you'll wind up with a very capable quad.

Tons of aftermarket parts for both out there, and if you shop around they can be had for a pretty good price too.

I bought the kfx, but it was at a dealer that sold both Honda and Kawaski. It was the last year Kawi was carrying the 400 and I got a better price on it.

 

I've owned a Z400 and rode a TRX 400, I thought the z400 (2006 model) was far bteer riding and looking. The z400 is water cooled, which may be why someone suggested the Honda is more reliable. Our z400 was a champ though, never had a problem, but I convinced my wife to upgrade to a TRX 450 for more power. The z400 (stock) rode like a cadillac on the dunes.

450s are so cheap now, not much difference in price to jump to a 450... if you're buying used.