Evan has a little attitude, yes, if you give him attitude. But you asked for a good gunsmith in the So Cal area. If you want a good one, that's what you got in Orange County. Evan scuffed up the bluing on my son's gun, and when I noticed it, he apologized, and offered to [b]replace the gun[/b]. Can you honestly say that is what anyone else would have done... rebluing yes, but replacing?
Besides, if you want AR work done, you're screwed anyways. You've got to take it to a licensed CA AW repair facility. Good luck finding another one in the area. I hear there is one up in the Hollywood area, and heck, Evan might even give you the name and number if you are polite to him.
His pricing is slightly higher, as it is with all non-chain stores that are interested in your business for the long term, instead of the quick buck for tomorrow. He's also flexible on his prices, and will wheel and deal with people who are polite and recognize that he's got a business to run as well.
As far as the fake suppressor, man, he was obviously doing something I've seen him, and other business owners do, even myself. He didn't want to do it for whatever reason, and he priced it sky high instead of telling you no. Why? Because if you had said yes, he would have laughed his way to the bank, and wouldn't care about having to do something against his previous reasoning.