hi first timer looking for some advice , have been reading posts and comments on carrera bikes and more 2 the point Halfords , the comments havent been great towards halfords but while looking for a bike on ebay the thing that comes across is that carrera bikes are that they have the same spec and use the same components as most of the other makes ie trek , giant ,etc , my point and question is it just the set up at halfords to be wary of or am imissing something ? i realise that the frame is obviously halfords own brand , any advice would be appreciated ,