Trail riding on Ndiza's is still a no go. Its a specialist 4X bike! And one of the few these days...I too am in the exact same dilemma... Rode the Izumu all last year for DH and loved it, now Im looking for a fun 'mini dh' bike that wont kill me on xc rides. Granted I dont strap on the spandex when I go out for xc but we do put down some decent miles.
My problem is, as soon as we get to a downhill or find some jumps/gaps etc. on our xc rides I cant resist and my current Enduro is not happy..
I noticed for '08 the Ndiza comes with a beefed up seat tube gusset..Does trail riding still void the warranty even with the beefed up gusset for '08??
-Pete
If you are looking for a trail rig that can take the punches and be somewhat of a mini DH bike the best suggestion I could make would be the Mbuzi [new for 08].
http://www.morewoodbikes.com/bikes/2008/mbuzi/tech.html
If its a trail all-rounder that you are looking for then the Shova ST would be my suggestion:
http://www.morewoodbikes.com/bikes/2008/shova-st/tech.html