In the studio: mainly a pair of old Tannoy DC200 (10" hifi equivalent of the RED), powerful, not bad at all but typical "coax"sound in the mid-high range.
SVS + Fostex Sub for the 5.1... correct, not more. But I need 5.1 monitoring for some productions...
Dynaudio C2 ("classical reference") for the "real" monitoring = the best by far, but needs a ton of amp power behind them, not practical when playing.
Sony 7509 headphones (too much bass)
AKG K270 headphones (good)
On stage: a double pair of DB Technologies Arena 8 + a pair of 15" subs. Power ! :-)
I also tried a pair of Alesis 620 monitors on a small stage but wasn't satisfied: "hiss" & too much (unnatural) bass.