would you buy either of these? http://www.spicercycles.com/index.cgi?cat=26&sub_cat=Frames&prod_id=367&cat_desc=Trials http://www.spicercycles.com/index.cgi?cat=33&sub_cat=Two-wheel%20drive%20bikes&prod_id=443&cat_desc=Two-Wheel%20Drive%20Bikes