Oh half on road half off get a
Trek 4500
www.mtbr.com
Its a hard tail, so its not meant for extreme downhill, but it works fine on anything else
Its got a nice suspension system in the front- and its reasonably priced\
check it out
*EDIT*
http://www.mtbr.com/reviews/2004_har...t_123246.shtml
Its cheaper than that though- because the 2005 models are coming out in about mid july- so most local bikeshops can cut you a deal
Its got decent base wheels, good offroad, decent on-
most strickly offroad tires will be bumpy and obnoxious onroad - and this one isnt
check it out I love it!