Buy a honda and build it up gradually. The sikk bike is OK if you get lucky and recieve a good one, some really fall apart and some hold up. I have one and the footpeg mount keeps bending down, the rear wheel fell apart, the plastics shattered when I dropped it, and the rear brakes locked up on me, but it still starts first kick. I know of another person that has one and he has gone through 3 motors already. Sikk is good about warrentees, but you might and up wrenching on the bike more than riding it. I know another guy that has been riding one for months now with no problems except the rear wheel spokes coming loose. Luck of the draw I guess. Don't know much about the thumpstar, rode one once and hated the ergo's, they are bigger $$ also.