I have one, about 30 brews into it. I love it. I've retired my three tier system after brewing on one. I only have the 120v so it takes awhile to heat up to mash temp and from there to boil. That's the only drawback for me. They have the higher power one available now even though that still...
First: Ozzy?? If I remember right
Last: Slayer, Anthrax
Best: Pink Floyd 1994 at the Rose Bowl. By far the best production of a live show of any band out there
Honorable mention: Australian Pink Floyd a couple years ago. They did the whole Dark Side of the Moon start to finish.
Dave Matthews...