you said it yourseld, "when they work", I was just quoting you....
I am never going to install a piece of gear where I can then cross my fingers and hope it was either repaired or one of the good batch. I would expect them to fix/repair any of the amps they had troube with so doing what should have been done doesn't really get any bonus points with me. There are companies that would not have done anything, but they there are not phorums for those brands. When I install my gear I want to know that it will power up now, and 5 yrs from now.
what else can I say I am a grumpy asshole most of the time.