I purchased an OTA receiver upgrade card and an inexpensive antenna for my Dish DVR box, primarily because it's limited to 2-tuners for satellite recording but with the OTA card I can record an additional 2 OTA channels at the same time.
However, as I've pretty much written off most TV shows on the major networks, and the cable channels that I record programming on typically repeat the episode a couple hours after the initial airing (so I can avoid scheduling conflicts), I haven't had to use it in a while.
The OTA recordings do look better than the sat recordings, but they also take up massively more space on the DVR, and running out of space is always a challenge.
If I were to cut the cord, which is an idea I'm always tempted by, I might want to get a better antenna to get more OTA channels and more solid reception, but I'd also need to find some sort of DVR that can inegrate with a program guide as I never watch anything live as it airs.
HT: Sony 940C, Oppo 203, Harman/Kardon DPR1001, Infinity Interlude IL40 x2, Infinity Interlude IL36C, Infinity MS-1 ii x2, Infinity MSW-1
Computer: Elac Uni-Fi UB5 x2, Elac Element EA101EQ integrated amp, SVS SB-12NSD
Dedicated 2-channel: Infinity Intermezzo 4.1t towers, Bluesound Node 2, Emotiva PT-100, Crown XLS 1502, Furman PL-8C