For me, a four stroke 125 is the largest of the pit bikes. 150+cc fours and 85cc two strokes are no longer "pit bikes". Yes, I would be faster on a YZ85 minimoto, but I would hate to ride one at 3-5mph on the trail or cruising through walking traffic (actual "pit" bike riding). I got a TTR as a "do-it-all" bike. Fun on dirt, pavement, trails with the wife on her 4-wheeler, to the store (eventually) and general back yard hooliganism.