So further info an observations about my migration in the interest in helping others:
1: My first test was to see if the newer flex 4K tuners had any improvement over the extend tuners. I happen to have one of the older extend units with a fan. My area does not have any ATSC 3.0 stations yet, so all my tests are based on ATSC 1.0 channels for now.
My test was to keep the same antenna setup (using the exact same location and orientation) and just swap the antenna input between the two units (no splitter) to see if the symbol quality improved on one troublesome channel I have been dealing with that can get pixelated during high winds or rain.
I use a very handy iOS app called SIGNAL GH to look at my station lineup signal levels. What I observed was a very slight improvement of signal strength and signal quality on the flex 4K but not very much. I was hoping for a bigger improvement frankly. I live in the twin cities metro and the extend pulled in 69 stations, while the flex surprisingly only saw 67 stations. All the major stations that I care about were found by both tuners. I’ve got all the undesirable stations blocked out in the HDHomeRun lineup.
So I’m waiting for a rainstorm tomorrow to see if the flex 4K symbol quality has any improvement on this one channel (ktsp local abc station)
2: don’t get caught
I didn’t add a station guide provider to the new flex 4K after adding it as a source on the server so even though I set my tuner priority to the flex unit, channels dvr only knew about the older extend tuner, which had no antenna. So I lost a couple of recordings set up for last night and early this morning. Remember to add the station guide provider and refresh all the guide data. I’m hoping this will fix the problem tonight for masterchef. To be safe I also powered down the extend, but they should do exist if I choose to keep the extend.
Hope this helps others. Wish my area had ATSC 3.0 , but there is so little broadcast material on these days, that I doubt the broadcasters would want to invest any money when it seems everyone is moving to streaming models. But that’s a guess on my part, and a whole different subject
Best