I finally got back in town and set mine up. For whatever reason it was having issues downloading and updating off my Ethernet connection, so I went to WiFi and it went more smoothly.
Until I could get the call in and download working, it would reboot, notice my 1TB WD AV Expander, but then tell me it was unsupported. After those kinks worked out, it recognized the AV DVR Expander and formatted it.
Speed is good, I like the look, and to my eyes OTA PQ is more crisp than Dish. I'm able to flip back and forth, so maybe that it's a newer chip or its doing some sort of undefeatable edge enhancement. Looks great regardless, and I like having native. Downloaded a 1080p/24 episode of Hell on Wheels from Amazon VOD (1.7gb's in size) and the PQ is outstanding. Roamio outputs 1080p/24 without a hitch as far as I can tell.
I used to love the auto downloads for season passes on Amazon, and I will be using that a lot moving forward. Other than the buggy setup for me, no complaints yet. I also tried out recording 4 OTA shows at once, while downloading an Amazon TV show, worked fine.
OTA tuner seems to report lower than expected, but it seems to perform better. For example, my local CBS and ABC are usually 100% on anything I try in the living room, but the Roamio reports 85%. I am not able to get fox OTA because of dropouts with the Hopper tuner, and a SS around 60%. TiVo report 50-55% for Fox but I watched it 30 mins last night and no drop. When the fall kicks off Ill try recording a few shows and see how they do.