Look thru the negative review section. That's about all I can offer.
There are so many vendors and no matter who you don't like, somebody else will love them.
If you want recommendations, mine would be
Copper Creek
Ahlusions
Plume Room
The Vapor Room (killer good deals for new customers!~)
I just googled "The Vapor Room" and there seems to be several...
which one are you referring to (cuz I'm hunting )