Hi, I recently got hooked into trail riding. Last week I rode a trail for the first time with my 8 yrs. old mongoose. I find that enjoy climbing, sharp turns, and descending. After two hrs. on the trail, my back and knees took a beating. I did a lot of research and narrowed down to Jamis '13 Dakar 650 comp. before I pull the trigger, I would like to hear some opinions in regarding to my decision. Thanks.