That's a really nice (and pretty closely matched in many respects) list of projectors, but first I'd like to address the screen. There's a decent chance at that sort of close throw-ratio the cinegrey will hotspot a bit. If your light-control is generally pretty decent and because your screen-size is modest and projector choice nicely bright..I'm pretty sure you'll be able to fight a fair amount of sneaky hallway light even using one of their more plain screen materials. At the very least, get the projector before you get a screen and try it on the wall to get a rough idea how bright it can be on a matte surface and I think you'll be pleasantly surprised how much light it'll still beat. If it looks good it means you can simply go with a plain white (and lower natural gain) material with better uniformity, color, and less artifacts. The cinegrey may work alright, but I'd test first before dropping the money on it unless they actually accept returns/exchanges.
Now the projectors. All can make that size within 10' or less and all are fairly bright in accurate modes with great contrast for under $2000. The Panasonic is likely to have a contrast advantage over the rest while the other three are VERY close with eachother in CR (in best to least it's Optoma, Benq, Epson, but it's close enough it probably won't matter much). The Benq and Epson are probably half the price of the other two with the Benq costing the least, so that's something to consider with how close they all are in performance. If you're fairly noise-adverse the Epson is very quiet while the Benq is likely the loudest. 3d and fast motion will be nicer on the Optoma and Benq while the Epson doesn't have 3D at all.
If price is no real object I'd take the Panasonic for the nicer contrast I'd expect from it..otherwise I'd take the Benq as it's either a tie or close second in most respects and a very competitive price with that in mind.
Just to add something more for you to deal with..if the Panasonic and Optoma aren't too expensive, for $200-500 more the Sony hw40 is a quite noticeable step above in contrast while giving a bright, accurate, all around fantastic image with great flexibility and incredibly low operating noise. It simply is VERY good at everything and is THE ONE to shoot for if you're shopping near the $1900-2500 point.
Last edited by Ftoast; 08-11-2014 at 08:27 PM.