Zone 2 is very intuitive to engage and use, plus, the included ZR-5 remote is a major upgrade over the ZR-2. The ZR-2, which was included with the M15, felt thin with buttons that didn't offer quality tactile feedback when pressed.
Here's a picture of the ZR-5:

Here is a small picture of the M15HD processing blu-ray (only the 6.1 mix from Top Gun BD but I don't see any reason to purchase a 7.1 DTSMA/TrueHD to test this) while sending Zone 2 stereo from my PC to my Quad 606 and Totem Tabu Speakers [ed corrected - sorry] (those Adcoms make nice, 90lb. speakers stands

):

I'm putting the Totem's through their paces so I'll have to try them out with different amps but I *think* that I just found my new Zone 2/PC near field monitors (*whew* - that was some search). I have some Totem Model 1s and some active Dynaudios on the way but I really like how the Totems + 606 match the sound signature of my existing set-up (eerily similar - very open with a sweet sounding midrange). I bet that the similarities have a lot to do with the Quad 606 & 909s being employed... ...but that's fine by me - they're cheap.
Once again: the M15HD is performing flawlessly (no pops on source changes or volume changes on zone 2 pre-amp-outs).
One more nice feature: it knows to use your sub for Zone 2 when there's no input/playback on Zone 1! That's cool for anyone looking to use Zone 2 for a PC in the same room that doesn't want to purchase an additional sub for monitor speakers.