I'm 14 and looking to get a road bike, I will ride it every week but not too far maybe 20-40 miles per week. I'm looking to spend £300 no more. I saw the Carrera zelos half price at halfords and I'm not sure whether to buy it or not. But i also saw advice about the Tirbin 3 and now I have no clue what to buy, if none of them are suitable for me please say, thanks. PLEASE HELP!!!