Received my 3DXL yesterday and here are my initial observations.
My setup is a PS3 and DirecTV HR-24 plugged directly into the 3DXL (via HDMI). 3DXL HDMI output to Pioneer Elite AVR (non 3D). Pioneer AVR HDMI out to Octova 3X2 HDMI switch. Output of Octova to projector.
First, with this setup, the 3D video passes through everything perfectly. Handshaking takes a few seconds but overall it works fine. I can verify that all of the 3D channels on DirecTV look great. No issues. All 3D from the PS3 look fine as well.
Before this, I was using a Pioneer 3D Blu-Ray player with checkerboard output feeding a Samsung 60" DLP TV. The 3D coming from the 3DXL to the HD66 is every bit as good if not better since the size of the screen is so much larger. There is definitely brightness lost. I tried to compensate by turning up the brightness and contrast on the HD66 but after doing that it tended to wash out the picture and introduce some distortion artifacts. A high gain screen is definitely a must if you want a nice bright picture.
OK, so I must have missed the memo on this. Isn't the 3DXL supposed to pass multichannel audio through HDMI? All I am getting is 2 channel PCM. Nothing else passes (Dolby Digital, DTS, Dolby TruHD, DTS Master Audio, etc). As I said before, my PS3 and DirecTV DVR are plugged directly into the 3DXL then go to my AVR. Multichannel audio should be there right? Guess I will need to hook up the optical cables for audio. Kind of bummed about having to do that.
I tested out Avatar on Blu-Ray along with a few 3D programs on DirecTV. All looked great with 3D effects that look every bit as good as your local Cinema. Stuff really pops right out of the screen. Very impressed. Can't wait for Tron now!
Basically, the 3DXL does what is should. Your friends and family will be visiting you more often.