I am wanting to get my 9 and 11 year old a bike that they can both ride. I am thinking of an auto to start with as neither of them have riden before. My budget is around between $500 and $750. Does anyone have any suggestions on what type of bike (manufacturer) would be good. Are the cheap Pit Bikes from China any good. I suspect not as I have read on a few eBay forums that the parts are almost impossible to get and they break easy.