I had a chance to play with PE7700 for 3 hours in a well-light-controlled room, after trying 1080i, 480i, 480p, 720p, component, HDMI, here is my thoughts:
1. Image intensity very good. Very high contrast look.
2. The color seems to be dead on, very accurate.
3. It's quiet, though not silent, very a big improvement over PE8700/PE7800.
4. Finishing quality is good, laquar-finish, even on the remote control
5. short throw lens, can throw a big image in a short distance
6. There is a "Real" mode, seems to be 1:1 mapping if you feed a 720p signal
Things that can be better:
1. THere is no 3-2 pull down! I checked it using Super Speedway DVD, 480i input to YPbPr and the BNC connector, either terminals showed excessive motion artifacts due to 3-2 pull down. Anyone who has a PE7700, please check out the Ch. 7 of Super Speedway. Actually, the 3-2 pull down artifacts are everywhere when you start playing the DVD. Don't know whether it's isolated incident or ...
2. 1080i artifacts I was watching a 1080i pro-baseball game, the side lines (diagonal) shows constant artifacts, even when the camera is not moving. This indicates that it may just treat 1080i as 540p signal, hence even/odd differences show up on the diagonal side lines. I seem to recall one other new projector also has this issue? treating 1080i as 540p?
3. No gamma adjustment selection Well, the image already is very good, so normal folks probably don't need this. But to power users, the lacking of the adjustment is a let-down. I personally want to change to a different degamma since the overall image is a little "harsh" to me due to its high contrasty image. Don't get me wrong, high contrast is good, but everyone has different preference, so it should be good to allow user to change to different degamma curves.
4. No Senseye adjustment items The image adjustment is just the normal ones, one cannot control the features as described in BENQ's website of their senseye technology. This is a let down also for power user. But for average folks, this may not be a problem.
5. OSD coloring leaves something to be desired. I probably have seen too many Japanese OSD designs ...
Overall, it's a good projector for average folks, very contrasty images, intensity is really good (a big improvement from PE8700), it's more like a TV image than a film-like projector due to the high intensity. THere are some issues with the unit I saw. Even if PE7700 does not have 3-2 pull down, nowadays, the HDMI DVDs are very affordable with 3-2 pull down, one can just run through HDMI to bypass the issue.
For power users, I would suggest to check out the machine first to see if it's to your liking. The adjustments are the normal packs, no extra features (like those described in Senseye website) that one can play with. It maybe all set in default. The 480i and 1080i artifacts maybe something we all have to stuck with for lower cost 720p. Only Marantz VP12S4 now claims to have 1080i de-interlacing with 3-2 pull down film modes!