RE: New Chinese motors
May be an option for someone on a budget but if your budget is really that tight I would consider holding off a little while and buying something with more power. If your building something scale and slow (cruiser or similar) it may be ok.
I just wonder some times how good the cylinder is sometimes in these budget models. You only have to have issues with one thing that you cannot get parts for any your going to have to buy another - by that stage you would have been ahead buying a proven motor like a Zen.