I am one of those who has wanted HD recording for more than a year, but has held off buying the 921 for the following reasons:
1. I already have a 6000 and only 1 HDTV. I don't need a second HD receiver. If I get a 921, I have the problem of what to do with the 6000.
2. Most of the programming that I want to record (football games and networks programming) I get OTA. From what I read here, this is where the 921 has the most problems (no reliable EPG, no name-based recording, timer conflicts, etc.). These were supposed to be fixed last summer, but still only promises.
3. Complexity. I know that there a work-arounds for many of the 921 bugs, but my wife doesn't want to have to refer to a trouble-shooting checklist to make sure she can record Desperate Housewives. There also seem to be many issues related to proper installation. (What are the right switches, cables, diplexers, adapters, order of connections, etc. for your configuration of receivers?) If I try to save a few bucks on a group buy, how do I know what other installation hardware I need, and how do I arrange installation?
4. Cost. I can afford a 921, but am still concerned about value. I would not complain about the cost if it were reliable and easy to use. But given the current shortcomings, even $839 + extra installation hardware seems like a lot for what you get, particularly if something better might be available in the near future. Trouble is that no one seems to know what, if any, major improvements will be incorporated into the 942 vs. new bugs and problems.
Now any one of these complaints alone would not be enough to deter me from buying a 921. It's the combination of all of these factors that have me on hold. If new software releases fix the problems related to OTA recording, I would most likely take the plunge. But for now, I'm still watching and waiting.