I think all the criticism is rather unfounded. I just noticed this thread because it has new posts and read the Sunfire review. I don't really see what all the fuss is about.
If one owned a Sunfire and also has very thin skin, I could see how they might take offense to describing the sound as 'piss' (didn't see that in the revised version). But to take offense because it was described as 'muddy'? Give me a break. That's not a very damning criticism. Besides the perception of sound quality can be very subjective as we all know. I would take the descriptions of sound quality with a grain of salt and compare the AH conclusion with others; if lots of other reviewers have similar sentiments then it is probably true. That's as far as I take subjective evaluations of audio gear - I try to listen for myself if I am interested in a particular receiver.
Now what IS extremely valuable is the descriptions of all the 'useability' faults. Lights that mean nothing and stay on all the time, quirks with the auto-sense feature, etc. I think those comments are spot on. I am a programmer and I know it's tough to get everything right on the first try, but for $3500 I too would expect it to be nearly flawless! I personally don't understand how there can be so many relatively high priced pre-pros on the market that can't get even basic useability features right and yet still sell well (Oh yeah, its the 'sound quality'). My $300 low-end Onkyo is absolutely flawless in that respect. How can a low-end receiver get it right for 1/10 the price and yet the high-end can't? As you go up the line, the sound quality approaches the big boys, IMO and yet retain the useability features.
Please keep giving us reviews that give the whole picture, but maybe learn to be more 'politically correct' so you don't offend those people who are just looking for an excuse to dismiss your opinions. [In my business we need to say things are 'challenging' instead of 'totally impossible to do' in order to appear 'optimistic' - rather than tell it like it is - sadly, that might be required for audio reviewers too].