Hi Stone, actually I have one myself...I was wondering if someone else was using it and how he/she was dealing with the "strange" panning feeling due to the M/S processing.
I'm using them mainly for mastering. But of course when mixing I'm switching to them from time to time.
I think the main difference from the Adam P33A is that they sound more like a hi-end HiFi system, while the P33A are more "crude" in all frequency range.
Oh... BTW, if you have phase issues, with the OWL you can find them easier... I think it depends on the way the system is built.
Cheers,
Marco