Posted some of this in the Adelphia HD thread, but, here goes:
I imagine that each cable provider sets up default configurations and channel tables for their system, which might explain some of the peculiarities.
It's unclear which output resolution from the Moxi that I should use into my Samsung DLP. Not much visible difference between 1080i and 720p. The Samsung is native 720p, but I don't know what format the HD over cable is coming over in (if it's even the same for all HD channels... it isn't over the air, after all)
Integration of the plethora of remotes is a pain. I've got the Samsung remote (needed to select which input to use (RF,Component,DVI) , and to turn it on and off. I've got the stereo remote (to select which audio, control the volume, etc.), the DVD remote, and now, the Moxi remote. I haven't trudged through all the alternatives of programming macros and combinations, etc. yet., but I'm hopeful that I can come up with some sort of useful strategy.
(I've also learned, from the remote central site, that it's possible the Moxi uses a different encoding which the standard learning remote can't use... more of a wireless IR keyboard high rate thing... it would make sense given the eventual use of the BMC as a "control hub". hey, it's a PC, it would have no problem emitting all manner of IR signals to all your other devices, but, until that is a reality, it's a royal pain.)
The SD output of the Moxi is, to put it mildly, hideously bad quality. Not sure why, but I'm much better off using the RF tuner in the TV. Makes no difference whether I use component (presumably upsampled), composite video or RF outputs from the BMC9012, they are all horrid, with quantization artifacts, screwed up color balance, etc. (and, of course, this applies to recorded programs off the DVR... making that function of limited usefulness). Arguments about needing to do A/D: MPEG2 compression, decompression/A are bogus, in my opinion. Clearly, one can get an acceptable signal in 4.5 MHz of analog bandwidth with the RF. One should be able to do the same with modern A/D and signal processing hardware.
It's trivial to do an A/B comparison between RF and composite video (or RF) coming out of the BMC9012, because you can set up the Samsung for split screen. (one can also see the several second delay through the BMC9012 with this, of course)
The audio level (digital output) on the HD channels is fine, but the level is 15-20 dB higher on the RF channels (1-100), so if you switch between an HD channel and a SD channel, you either get blasted or can't hear anything.
I haven't tried recording and playing back to see if there's the same difference.
If I had to guess, there's some digital encoding options on the SD channels that are screwed up. There's no reason for it to be that bad. Recorded HD is fairly good quality (I haven't figured out how to easily A/B it..but there's no huge artifacts)
I don't know how it handles it when the HD channel reverts to SD when recording (the NBCHD reverted to SD for the closing ceremonies.. I'll check it tonight.). Later.. oops, I haven't looked, because of the following little "feature":
On recording and playback. When NBC sends program info out so the Olympics record as a huge 5+ hour single block (filled up the disk!), how do you scroll around through it, aside from using FF or REW? If you want to look at the last half hour, for instance, you need a way to "goto" or "jump" in 1/2 hr increments or to an actual time. (probably 30 minute jumps would do)