I have regularly put show relay in for village hall type shows, mostly to dressing rooms where latency is irrelevant, initially using 21" CRT TVs and composite, often running over cat5 with baluns. One venue had 19" flat monitors and VGA over cat5 receivers in place so sourced the same system from CPC and converted to VGA. despite being smaller the actors seemed to prefer the flat screens and found myself running VGA on 19" flat screens more than CV on bulky CRTs.
However a trip to the local tip at TV Digital switchover quite by chance I parked beside a vehicle from which a 15" and 19" analogue TV were being removed, the jobsworth staff member tried to argue I wasn't allowed to take them despite not even touching the ground, literally a direct vehicle to vehicle transfer and during that another person offered the 19" he was about to dump. Those 3 plus another 19" aquired since are my usual stock for such, occassionally 32"s/40"s from home when required but rare.
Do I regret disposing of CRT stock? Only once as relay to MD from SM feed. At one point both could be seen wiyh significant latency to MD.
I did try using a CCTV cat5 system... Yeah right, never again.
As far as I'm concerned it's analogue all the way, I just wish I could find a camera to cope with the dramatic light changes better.