looking at getting my 6yr old son a 90 atv. was set on my buddies popo sportsman 90 and another guys 2005 predator 90. but i have been reading alot of negative feedback from other popo 90 owners on other sites. i was going to avoid the off brand bikes but are there any non big4 name kids atv's that are of good quality and performance. looking around $500 and$800. manily for trail riding.