Better yet, why not mentioning a common reference, such as a DVD show, for instance. My previous benchmark in terms of live shows were the Eagles HFO, which has been surpassed by a tight margin - IMO -by the same soaring Eagles, with their new show in Melbourne, Ozzy land.
To my taste, I watch it at -10 / -5db on DTS mode and it's absolutely fantastic. Extremely clear , punchy and bloody loud, though.
Sure there are so many other excellent references to be mentioned in here, so fire away folks!
Cheers.