None of these posts address the desire on the part of many users to have an integrated UI for local and Pay channels simply for the ease of use. I would vote for a product every time that allows the integration of an OTA receiver with the Sat Receiver.
Post #13 by aa9vi addressed the integrated guide issue:
Why an ATSC tuner is a good idea:
1. ...
2. ...
3. Guide scrolling. Easy to navigate between channels when they're all integrated into one system. Switching between TV inputs is a pain most people won't deal with.
If this is nitpicking, well so is digging up a year-old thread. Anyway, the AM21 DOES work with the H21/23 receivers on the current NR software, which may not have been true when this thread was started...