I am now 300 miles in on the alloy 105 Grade, did a fair bit of research before buying - used for commuting on cycle track & road didn't want hybrid as have MTB didn't fancy all out road bike (been out of saddle a while so wasn't sure I'd cope!) Read many reviews and decided I'd give the Gt Grade a bash. Great bike very comfy nice kit on it only thing from day one which will hopefully be sorted on its 6 week free service/check: when applying brakes with some force forks judder which gets worse the longer your braking for.