In July 03 ,I watched along with several others.. as Ray Peters rode the then new Rev 80 . On some of the most difficult sections at the TTC gate trials.. he cleaned them with ease ( mind you these were easily national Expert level sections)..It was his first time on the bike..He impressed all of us , with how much low end the motor had .. the suspention was awsome .. the bike has performed extremely well and has had no major teething problems, new bikes at any level can have these , but this bike has been quite solid .. many people who have owned the gg 70 have stated that the Beta motor has loads more torque and is smaller because of a mid sized frame... My point about Ray was this bike should be excellent for a child for a few years .. learning technique is essential on the smaller displacement bikes .. as the motor cannot save you as easy.. many people put there kids on bikes that are too big for them and the habits they form (from a bike too big) are hard to overcome.. kids who learn on small displacement bikes will accel faster in this sport .. Look at Will Ibsen for example.. Bill is on the right track.. My son also rides the small bore and has unbelievable technique for someone his size... he can ride a 200 or 250 but we will stay on the small bore wagon a little longer... Good luck in your choice