havnt had too much experience with the drz but if your after swapping it over for one with the BBR setup, i personally would, everyones opinion will be different though, some will prefer the CRF50 over the 70, zwebx is right about the CRF being better to muck around on, where im pretty sure the DRZ is a bit bigger, runs 12/12 or 12/14 i think, so depends how you feel about it overall, id find someone with a DRZ70 and take it for a ride and see what you reckon,