I want to know how it does with Blu-ray ISOs. Can it mount them? Menu support? Bit-steaming support? Can it play BDMV folders (Blu-rays ripped to folders instead of ISOs)?

I believe it only plays MKV files stored on an optical disc, not stored on a network drive, making this feature less useful. I considered buying one until I learned this.

Sage needs a better interface for browsing movies, such as OML for Windows Media Center. If Sage had that, I'd replace all of my Media Center PCs in a second.

I know this is an Apple-centric blog, but I have to say that I've found Windows Home Server to be the best solution for me. I'm a bit surprised how popular the Drobo is since it doesn't even have a network port or the ability to run applications/plug-ins. WHS now works as a TimeMachine client, can use drives of multiple sizes, and offers the equivalent of RAID1 protection. My WHS can handle 16 drives, although I only use 12, a combo of 500GB and 1TB drives, resulting in about 7TB to total space. It also performs automated off-site backups of critical data and it can be accessed when I'm away from home.

I think the drobo is a great product, but think there are other options with a better feature/price ratio.

Actually, this is a new feature with firmware v2.1. It automatically transfers audio to the bluetooth headset if it is connected. Otherwise, use the instructions above to transfer audio away from bluetooth and to a different output.

My next display will be a JCV LCoS projector (DLA-HD2 or its replacement.)

I'll probably upgrade my family room LCD flat panel to an OLED model a few years from now.

Dolby True HD and DTS HD support from Auzentech - the holy grail for HTCP audio! I hope this becomes a reality in the near future. . .

The Asus Xonar Cards make no mention of supporting Dolby True HD or DTS HD. They just pass 5.1 PCM data the way current SPDIF / Optical digital ports do:
http://www.engadget.com/2008/02/28/asus-shows-off-hdmi-equipped-xonar-dx-and-xonar-av1-sound-cards/

It's more than just "punching values into DSPs". It is hugely taxing on the 2 DSP within the D2 to process 7.1 channels at 192 kHz (everything is up-converted.) This feature pretty much maxes-out the DSPs. The AVM-50 won't get the room correction upgrade because the DSPs are not powerful enough.

hifiaudio2: This will be taxing the amp too much? I don't think so. Most poeple have the D2 paired with very high power separate amps, such as Anthem Statement P5 and P2. Room correction won't be a problem. http://statement.anthemav.com/HTML/Products/P_Series/P_Series.html

Well said. Unless you are in a completely dark room, the glare on a plasma is unbearable in my opinion. This is also a reason to avoid the newest Samsung LCD panels; they have a glass front and no glare filter -- just like plasma.