I have a BudBuilt unit in my truck. If you like the original item, the real deal, made in USA, then go BudBuilt. You also put a few bucks into the pocket of a guy who spent time figuring out how to make it work.
If you like the chinese r&d (ripoff and duplicate) or if you are price sensitive, then go trailgear.
Either way, you get a product that works.