I know a lot of people in the industry who will vouch for his organization and him as being a good guy. They have a pretty good reputation.
Of course there are going to be customers that they just didn't get along with or customers who didn't like them.
I can see where he could be a guy who has a bit of a short fuse with people and sometimes maybe a bit of an attitude. I can also see where his personality may not mix with a lot of people.
Just like any business, sometimes you're going to get personality conflicts and you end up shopping elsewhere. Let's face it Audio dealers are just like any other business you're going to find some that are shady and some that are very trustworthy.
I feel like he probably runs a good business and he's close to where I live and enough people have vouched for his business that I know I would feel comfortable doing business with him. Could I have a bad experience with him? Yes, just like any other business out there.