Well. I know both Art and I have been able to directly compare the 5000e to the Sony 1000. I'm keeping my 5000e as my main theatre PJ, but I also liked the Sony enough to add it to my kids media room (probably premature give they are 18 mos, but they already like the Disney stuff, and the educational BR we have as well).
I'm also considering using it in the main theatre below the 5000e, but for 3D only, and I may do that by picking up a second 1000. The screen size you mention would work well with the Sony IMO.
As far as quality of the image, each has their +/-, as usual, but I still prefer the 5000e look for my larger screen. Art's comments are also posted in one of the other 1000 threads, but I think he arrived at the same conclusion.