I sold my son's PW 80 last fall. He was doing great on it but he got too big for the bike. I was going to wait until next year to get him a new one. I was waiting for someone to come out with a good 150cc four stroke with a real suspension. I will also have a little more cash next year. The wife wants me to get him one now. I can't find anything used. He is ten years old, 4'10" and weighs 100lbs. I know the YZ 85 would suit him better, suspension and power wise. I wanted to stay away from a 2 stroke. I don't want to be redoing top ends and I would need to get a spark arrestor. We ride mostly public trails. I don't want to spend more than 3K as I wasn't ready to get him a bike this year. I would like to get him the TTR 125. It would need springs, skid plate, and a chain guide. This would put me a little over 3K. He would probably need a new bike in a year or two. I looked at the XR 100 which costs about 2K and souldn't need any parts. I figure he can ride it a year and I would only loose about 500 on the resale. How is the XR, power & suspension. He won't be mx-ing, but he would like to hit some small jumps. After seeing him on the PW 80 last year, I think it won't take long for him to ride the crap out of what ever I get him. The better the bike I get him the more he can keep up w/me and this would incress my fun factor. I need some input to sway my decision. Thanks.