I have the Mini 4 I purchased early this spring, have a few hundred miles in 10 mile trips, and it has been flawless. Bike feels more expensive than what it is, and all the systems work great. The quality and fit/finish are better than some of the couple thousand dollar bicycles I have purchased recently. I think RAD is just suffering from inventory issues like a lot of the bike suppliers. I have adjusted the bicycle stuff on mine and it was pretty easy, the electronics are plug and play and would be easy to replace if needed. I'm curious on what issues the bike shops have been working on? I would buy another bike from them no problem.