My son is keen on buying a new fixed bike. He has an old converted frame, but frankly it is fairly rubbish. Front wheel 700c, rear 27", crap hubs, etc.
So he'd like to get a new bike, save up and buy it for himself.
It will be used for general road riding, training and cranking round the countryside at teenage-testosterone-driven speeds. He's a smoker with damage lungs and can manage a sub-hour 20.
He'll prob need to be able to fit mudguards.
Suggestions, please. Bear in mind his budget is really low, and he'll be saving up for it. I suppose sub-£500 is his mark.