I wonder what the OTA reception is like with digital.
In general, if you had a fairly decent picture with analog, you'd get a perfect picture with digital. If your picture was more snow than picture (you had to defocus a bit to make out the image) then you wouldn't have digital reception. UHF is a bit worse than VHF for long-distance, but not dramatically so until you get past the radio horizon (about 60 miles over flat terrain.) Reception over 75 miles is possible with a quality antenna and above-average terrain.