FWIW, I own two different sizes of the KS8000. So far, so good- and that's coming from someone who has been a huge plasma fanatic for years ;).
Anyway, I believe the confusion here is that the salesperson is not communicating the issue of the required breakout box (One Connect) that is used with this HDTV. It employs a proprietary cable from the one connect to the Sammy. The various inputs (HDMI, digital optical, USB) now get connected to the HDTV via the breakout box. See youtube reference:
All you need to do is hide the smallish One Connect box behind the TV using velcro/tie downs/etc. The other components are easily hidden elsewhere and would just need to have the appropriate cabling back to the One Connect box. Obviously a single HDMI from the AV receiver back to the HDTV [e.g. One Connect box] is the 'cleanest' option, but not always the one we end up with
Your online review of this tv says components cannot be hidden in a cabinet. Is there a scenario that would allow this?
Our TV will be mounted over the fireplace & Ethernet/HDMI/audio cables are in the wall ready to hoook up. There is a cabinet across the room to hide the cable box, DVD player etc... I asked a salesman at Best Buy & he was surprised when I showed him the review.