i'll make this quick cause i dont wanna beat a dead horse (even though its fun!) In your opinion, what is the best dirt (NON DOT) for the 650 L. riding conditions are sand washes, hill climbs, and fast, straight desert...WFO! Unsprung weight is a concern...I dont want a heavy tire, but i dont want flats either. I've racked my brain trying to decide...!!! Thanks for your help!!