Evidently there is no other feedback i could find for Sony BDP S5100 in india hence this long post, I believe S5100 is a succesor for BDP-S590.
I am unable to edit the above message May be it's time limited hence a reply post...
Note 1 - SACD - I am used to hearing music in Stereo. so Multi channel Music is the first time i am hearing borrowing a disc from a friend. It's Great to hear Multichannel Music . . But limited by the titles and media availability i am not a great fan of it. Coming to my setup
Denon 1911 failed to decode the DSD Signals I believe this is a feature only available on high end Recievers (3X and 4x series) as it requires a Sony DSD Chip, so the decoding of DSD is done on BDP S5100 and Denon recieves it as Multi Channel Audio. Surprising 'cause my Car DVD Player supports SACD(Yes its a Sony !! ). Again all this is done on HDMI only cable (no digital cable connected). Overall SACD is seamlessly supported on the BDP but limitatin of my reciever, Sounds great would use it if have the media but will not go hunting for it.
Note 2 - HDMI CEC - I somehow seem to like CEC concept as it enables communication between equipments and unified control irrespective of the manufacturer, W'll that seems only on the paper anyway

.... I have enabled CEC on my Panny, Denon and BDP S5100... Panny and BDP seem to sync well with CEC as i can control Volume, Power and menu navigation of the BDP using Pannyd TV Remote without any programming. But doesnt seem to work with Denon,... reciever can only control "Power State" switch on/off the TV and does not sync with the BDP, had similar issues on Marantaz BDP As well. Overall I believe there is a limitation in the CEC Implementation of the Reciever and does not seem to be a issue with BDP., CEC works well with Panny allowing me to use TV Remote to control the BDP S5100 (ps - all my devices are connected to denon via HDMI), For now i have programmed the Sony Remote code on the Denon Remote which also seems to work.
Note 3 - Media Playback - Connected 1TB disk through USB Easily recogises without any problem on the rear USB Port (5100 has 2 USB Ports one at the rear and in the front), it does not upscale the 720p media to 1080p.. I thought it does ......I believe it also does 3D but i am not very sure as i do not have 3D Capable TV or Projector.
tested FLAC, MP3, MKV, VOB & AAC plays very well, navigation to media is easy (though i cannot navigate when when playing content). One thing i observed is when i choose music and navigate on the folders if there is a "Music Video" it fails to recognise the file , so i have navigate to the same folder by choosing video from the main menu to play the video. same thing applies for Pitcures as well ...
SRT files are NOT supported through media so no subtitles. Decodes DTS, Dolby Digital from the Media.
Note 4 - Firmware Updates - I dont seem to get firmware updates as it gives out an Error .. My guess is S5100 is not yet launched in india hence the firmware updates are not available on the indian sony support site, the BDP is auto detecting the location (india) and populating contents more relative here like big flix. Although i keep getting popup's that the firmware needs to be updated for the latest content. Manual firmware update
cannot be done through USB and should be done only through Disc. So i have to manually download, burn the disc ... Awww !!! Finally got the firmware update through manual process using CD. !!!