I'm a person who likes to tell business' I do business with that they are doing a great job! Why do I do this? Having worked in an area where feedback is important, it's interesting to see that people complain more than they praise. It seems to easy to find fault than to see the good job that many do.
My favourite companies I love doing business with are:
Old Glory (USA)
Phoenix Forge (AUS)
Pulp Figures (CAN)
So let people know that you are happy with their business.