I found a brand "Kayo" that seemed to be a middle ground between the Chinese junk and the overpriced named brands. I bought two if the 70cc "Fox" models for my kids, and they are good little machines. My neighbor bought a Tao less than a year ago for his son. It's not running right now. He has lost a lot of bolts too, even after going through and tightening everything. I spent $2,500 on both the Kayo Foxes ($1,250 each) including everything.