Ok i am kinda new to all this and I have a mongoose I got for christmas and i have been riding trails for a few months and i keep bending my rims so instead of spending money each week on rims i was thining of buying a new bike after reading some posts I thinkni understand alittle about bike and would like some help.
I was looking at the Trek 4300 with Disc's Is that a good bike for the extreme or is it a good starter. The other bike i have looked into was Cannondale F300 ther eis about $200.00 difference in the bikes but i want the one that i can go to the extreme.

Which one is the better bike or is there another one i should look into getting?