Regarding adding a Darbee:

I don't have a HD621 yet - trying to get it past SWMBO - but last night I tried to simulate what it would be like to have before the Radiance, because I was hoping to solve my Darbee issue this way.

The Darbee has been perfect for 2D (purchased September 2012), I had it placed after the Radiance (25' from the projector), but 3D would result in HDMI handshaking every few seconds. I had tried moving it to the projector end and had the same result. So last night I thought of moving it to in between my Oppo 103 and the Radiance to part simulate having the HD621 do the switching and then run the Darbee between the HD621 and Radiance to solve my 3D and so have it always available. However most of the time the Oppo/disk would report that a 3d display was not connected. Remove the Darbee and the Oppo loves the Radiance once again. The only time it worked was with some very specific turn on sequencing, which wasn't 100% reliable. I have used various length cables, as suggested on AVS, but no joy.

If 3D is important, see if you can borrow a Darbee. 2d has been awesome though.

Living room: DSP5000.3
WFH Office: M33
Bedroom: P200ZQ