His last bike was a poor buy from Halfords (not cheap!) but with sticky brakes, chain coming off and v jerky so i want to get it right this time. I'm confused already Tesco have one for £90 reduced from £180 at the minute and you can get others for under £150 online. How much would I need to spend to get a decent bmx? We live in the sticks so trying out lots of bikes isn't an option and i think he still believes in Santa.