My favourite band too, and I've seen them the last 4 times they've come to Australia.
However the last time (last year) was the least impressive - no new material and they didn't rework any of their old stuff like they sometimes do. But then again, they were still Tool.
BTW the band that opened for them was fantastic - called Jakob. New Zealand band that apparently been around for a while, worth listening too if you're a Tool fan. Instrumental mostly.