I'm of the mind that if someone has a negative experience, with a sponsor or non-sponsor alike, this is EXACTLY the place where it should be discussed, civilly of course. If someone has a really bad experience, censoring the topic based on whether or not they sponsor the club is almost akin to bribery.
With that said, Rudy ALWAYS kicks [language filter], has an awesome German Shepherd that I really want to play with, and has the biggest coral selection I've seen locally. I just wish I had some time to pick up my corals this week.