These are all observations from a previous RS20 owner, so some of the features could have already been implemented in the RS35/25/15 for all i know.
1- The motorized lens is only loud when powering on the PJ, but it's audibly loud, almost sounded like a pencil sharpener that it startled me when I had my back to the PJ getting ready to load a movie.
2- As far as noise, at standard lamp mode, the PJ is virtually inaudible. It's better than whisper quiet. And again the motorized is only loud when initially turning on. But then I turned on High Altitude mode since i am Mile High, and it became very loud. So I don't know if I MUST turn HA mode on at 5300ft above sea level (please advise anyone?)
3- The projector powered up in under 20 seconds, I turned around and bam it was on.
4- Initial aperture is set to 0, so I took it down to -5. Let me know if I shod bring it down further.
5- The remote is AWESOME! It feels like a piece of felt or fabric, looks very classy and to the point. It even has a permanently lit "light" button (possibly a glow in dark phosphorous material) so you could easily find it no matter how dark the room is, press and all the buttons are now back lit.
6- Notable buttons on remote:
7- Picture modes: film, cinema, anima, natural, stage, 3D, and user 1/2/3.
8- Gamma modes: Normal, A,B,C, Custom 1, and A 3D, B 3D.
9- Color Temp: 6500K default, 7000, 7500, 8000, 8500, 9000, 9500, High Bright, custom 1/2/3, 5500, and 6000K.
10- Color Space: standard, wide 1, wide 2
11- Picture Adjustments: every set to Zero by default, except Sharpness which is set to 30, Detail Enhance which is set to 10.
12- Lamp Power can be found under the Advanced sub menu, not under the Function menu as on the RS20. Lamp set to normal by default.
13- Lens control button can also be found on the remote, as expected, to adjust focus, shifting and zooming.
14- Aspect Ratio buttons can be found on remote as well. The aspect button simply switches between 16:9 and 4:3, and there is a 3rd option (Zoom) but it's grayed out on the menu.
15- Anamorphic button can also be found on the remote, and it switches between OFF, A, and B.
16- C.M.D button controls the motion drive and it switches between OFF, mode 1, mode 2, mode 3, and mode 4, and inverse telecline. With mode 1 and 2 being the worst just by the white Oppo logo moving in a "screen saver" motion fashion, you can see flashing of red/green around the logo (pretty ugly) so not sure how that mode will fair with film or just about anything if it cannot handle a moving logo. The other 3 modes still show the same color flashing upon logo movement but not as bad as 2, or 1 (which is the worst). Not sure if watching a white logo move and pop around the screen, but this was just a quick observation. When watching Dark Knight, mode 1 still showed the color flashing with motion or moving objects, mode 2 showed it a lot less (and looks best to me), mode 3 and 4 do not show this flashing but for me it looks waxy (too real for me to enjoy a film), and finally this inverse telecline mode just looks odd to me (I cannot explain it yet). I think all modes definitely will appeal to different viewers and the more I watch mode 1 and 2, the more I like them on film, the color flashing is definitely not as bad as it would be on a movie logo such as Oppo's screensaver. (more about CMD soon)
17- Digital Noise: unless i am blind, I cannot see it on the black/green Lens patterns when zooming or focusing or shift. Please let me know if should look elsewhere to detect digital noise. I was as close as an inch away from my screen and cannot detect it on black background screens.
18- Black levels and contrast: I think this projector easily blows away the blacks and sheer contrast of my RS20. The arial night downtown scene from the Dark Knight looks breathtaking! So black and yet the city lights look like they are extremely bright almost about to pop out of the screen. It is almost hard to tell where the blacks are on black or dark scenes at 16:9 and where the extra black space is on the rest of my scope screen, the blacks are just very very black for sure. I could always tell with the RS20 where the 16:9 image lies on my 2.37:1 screebn by viewing from the first row, but if I were to view a dark or black image or frame of film with lots of blacks on the sides with theRS40, I almost have to walk up to about a foot away from the screen to see or detect the sides or borders of the 16:9 image over the wider scope screen.
19- Sharpness on the RS40 is noticeably better than my RS20, but it's not a mind blowing difference, but it is definitely visible by just playing with the focus screen. (EDIT: this projector is noticeably sharper than my old RS20, this becomes very obvious when viewing HD TV from DirecTV, still trying to compare Bluray sharpness on the RS40 improvement from the Old RS20 from pure memory )
20- Brightness: projector is much brigthter in 2D compared To my RS20 which had more than 1300 hours. But i suspect others with higher gain screens are getting a much brighter image, mine is bright against a 1.1 gain screen but not blinding, I still have the lamp at normal mode and lowered the aperture to -5.
21- Looks and design: the RS40 looks absolutely gorgeous, like a million bucks! But it is going to be too big and wide for many existing mounts, so I highly suggest you confirm that your mount's 4 legs would be long enough to reach all 4 corners on the RS40. (unboxing pictures to be posted soon)
More to come, but this is the initial report..