If you were to compare the TRX400 and the LTZ400 what would be the results?
Power:
Handling:
Suspension for 70ft+ jumps:
Reliability:  

i'd definately go for the ltz 400
but the rear axles on them were first designed too soft and had to be recalled.
they warped and the bearings wore out in the swing arm.

they recalled them and replaced the axles.  I bought a blue streak comp rear axle and did away with any problems in that area.
suspension wise i think the once you get past the rear axle issues it's definately a better machine.
the honda good too, but hard to keep the front tires down without a lowering kit or changing the sprockets to lower torque off the line.  ( hard to steer with the front tires off the ground)  

i too agree with wolf1 i have an 03 ltz and my bearings in the axle went to hell. however the suzuki well exceeds the honda the power on the ltz is unbeliable compared to the trx not saying the honda is a badd machine because its def not. the handeling however i would give a slight advantage to the honda because it has a lower stance which is bettter for conering obviously. as for reliability i never had any problems with my suzuki untill i started put on aftermarket power adders. and everyone knows the honda 400ex is simply a bullitproof motor u can beat on them all day and night and the simply start up and go again  hope this helps