I sort of agree, but only because of the smaller size.
I'm of the opposite opinion, three CRT guns are better than one. Off axis viewing is the only place that a direct view CRT wins.
But hard to say when your comparing a much larger screen size to the small sizes single CRT direct views...
A decent Yes concert on OTA PBS HD here in Denver late last night.... I was shocked.. lol
5.1 and amazing video, but the HD video showed how bad they are starting to look from their age though... lol
I really prefer sports in particular on CRT RPTV, just to give you an idea of the varied...
In other words.. How often does a CRT RPTV need cleaned?
Depends on the environment. Plus, with a little moxie, you can do the cleanings yourself.
Calibrations hold fairly well. The user convergence, is usually more than good enough for a re-tweak of it.
The grey scale calibration...