Okay, my 942 is installed and I just ran the scan for local digital channels. I found it to be a bit more sensitive than the 811, it found all 9 of my local channels easily on the first pass. I'm using an amplified Silver Sensor indoor antenna and I'm 10 miles from the towers, sitting directly behind a small hill.
Right now I'm watching a channel with a signal strength of just 68 (if I change my antenna's direction a bit it goes to 82, but I lose two of the other channels). I've watched it for 5 minutes and there has been no pixelation or freezes. The 811 wasn't quite this stable with signals in the 60s.
Oh, and I should add that it locks on faster too.
So I'm pleased with the 942's OTA reception. Better than expected.