I've read every single post on this thread and have found it very interesting, so thanks to all who have contributed.
I'm very close to pulling the trigger on the TW9000 (5010 in US I think) here in the UK but have a quick question for you.
My room is as far from a bat cave as you can get - think white ceiling, cream walls, carpet and sofa! I've just bought a 0.8 gain grey 110" tab tensioned screen which has done wonders for the image from my existing projector (Panasonic AX100!! Still going strong!). This was previously projecting onto a 1.0 gain white screen - which gave grey blacks and poor contrast. It's almost as if I'm viewing a different projector!
So, back to the Epson. I demoed this side by side with a Somy HW30 a couple of weeks ago and was blown away by both of them. In 2D there was very little in it (for my eyes at least!) but as others have said, the Epson is streets ahead when it comes to 3D. However the demo was against a 1.2 gain Draper ReAct II grey screen, which is obviously a 50% increase in gain over my 0.8 screen.
So, my question is - am I going to struggle with 3D brightness on my screen? I'll be projecting 110" from approx 11 feet on max zoom on the PJ (has to be this otherwise I won't get 110"), which will either be ceiling mounted or on its feet in a dedicated shelf, but still ceiling height. I've looked at both Projector Central's and CoderGuy's calculators and for 2D they suggest that I will get a very bright image (if anything a bit too bright!!) but there's not a proper indication for 3D.
Also, will there be any impact, negative or positive, on the PQ if I'm using full zoom?
Thanks in advance