My son is just entering his teens and has and loves cycling - maybe not sport (YET!!) but as a form of independance/ transport/ exercise which as a lifelong cyclist I wish to encourage. He has gone through several kids bikes and is now getting about on my mountain bike ( i've added road slicks). He now wants to buy his own and has been looking at some hybrids ie. the Boardman, Giant etc. Any advice? Hes a tall lad so is now ready for an adult bike. I'm not sure to advise him to save as much as he can as a decent bike is going to last him for years or get a good second hand bike at less expense? Any opinions on best buys models etc? people with experience/advice?