I bought a 2006 Bullet 500. Looked great but the valves could not stay adjusted. I thought I was screwing it up so I had the shop check it, 2 times (it would stop running, I take it in, they adjust and within 100 miles, it happens again).
Glad I did because one day I was riding along, thinking, man, this bike is running great today. Really making power. Then "sproing, clack" engine stops, I clutch in and coast to the shoulder. It dropped a valve. I got a full rebuild under warranty and sold it after that. I just couldn't trust it.
It handled well and looked great, but I needed a bike I could ride. I have a bonneville now.