We had one of the first Winegard RAZAR's installed. And at the same time, since I also wanted a raisable mast to attach WiFi and Cellular Antennas to, we had the Sensar IV installed too
! Set up as A/B to antenna feed.
This allowed us to compare the two back to back...
Short of it? (Yes, I can be short - at times
The RAZAR HD Dome supported very well 95% + of the time. Easy operation, easy to tune to a specific channel, if the 'default search' was not ideal for a specific channel.
The few times the RAZAR HD would not pull in the channel we were looking for, we would try the Sensar IV. I can think of at least three times with our Allure, that the Sensar IV allowed us to watch a Football game, that we would have missed...
So different being digital vs analog, it's basically 'It works, or it does not!'. Vs the old analog would allow you to attempt to watch a show thru the snow.... of poor/weak reception
And note: In the Allure, our primary path to TV was via Winegard Trav'ler feeding Direct TV. So it was when we were parked in a location that could not sniff a satellite, and sometimes when we wanted local channel content we could not access via Direct TV.
IMO, if no need for having a raisable mast to attach other antennas to - the RAZAR is a KISS way to go (And never need to worry about the Antenna being up, when leaving a campground!!!) - a bonus