DS desperately needs a new bike as he’s grown quite a bit in the past few months, although he’s still small for his age. Would definitely still need to be in the junior range. He really wants a BMX but DH is saying no he needs to go with a mountain bike. We have some vouchers to go towards it. Can spend up to around £400. Are there any particular brands we should look for? I don’t want to get DS a bike that other people will laugh at him for and I know teenage boys can be quite harsh and boisterous about the bike you ride.