I'm looking to retire my mountain bike of over ten years as its got a bit rickety and well past its best. Budget is around £300 and looking at Halfords it looks like that pretty much leaves you with a Carrera. Does anyone have any experience of how good / bad they are? I could up my budget if I thought it was worth it. I don't do anything too taxing, mainly countryside tracks, bashing through the woods etc. But would prefer it to last a while.