My husband has the occasional burger at a Ruby Tuesday near his office and says it's not bad. That's the only one I know of that's not bad.

Geoff, I know what you mean, but I never hesitate to complain in a restaurant (as you know first-hand). I've found that if you do it quietly and respectfully, the server has no problem. If you start waving your arms and screaming, that's when they may take offense.