Not having attended many such events, and knowing the difficulty tweaking a high performing system in any room, much less a new one with time constraints, I think the sensible approach would be less critical in a sense. If you hear sound you consider great, then it counts. It should bolster your opinion of what you heard for you have some confirmation it is possible for that equipment to sound good. If you hear poor sound (barring something really horrible), write it off as not counting. You have no reason to think the bad sounding system is good, but in another room it might be. So such an experience means nothing. You really can only get positives or sort of no-opinion results from such shows.
So under show conditions, I do think only positive comments tell you anything useful. And believe me, this is contrary to my opinion in most any other circumstances. I have little faith in reviewers and less than once was the case. I find these forums with regular people, with some filtering and experience of their perspectives, far more informative than reviewers comments.
So under show conditions, I do think only positive comments tell you anything useful. And believe me, this is contrary to my opinion in most any other circumstances. I have little faith in reviewers and less than once was the case. I find these forums with regular people, with some filtering and experience of their perspectives, far more informative than reviewers comments.