They're terrible overall. Big, heavy, and always have callbacks. The only exceptions might be the RCAs of the 90s; the PTK-169 series. Those usually had OK CRTs, and would "stay fixed" awhile. Easy troubleshooting too, as a rule. Maybe the early-mid 80s Mitsubishis were OK to work on too, but they would always have dim CRTs after a couple years. And that brown glue to hold the wires on the board that turned hard, CORROSIVE AND CONDUCTIVE!!!!!! I guess the convergence chip failure, which was usually an easy $200 profit fix on Mitsubishis, makes up for the brown glue fiasco. And let's not forget the 80s Mitsubishi yoke insulator boots turning from soft rubber into hard, cracked crap that would corrode and start a fire in the yoke. An easy fix, and I was able to do the whole job including full convergence within 30 minutes! I made special 2x4 wood blocks to hold the CRT chassis just high enough to slip the yokes off the necks. I did 100s of those. Once in awhile I'd find a hole in the CRT neck, but that was rare.
Sonys always had shorted CRTs after hours of troubleshooting, and they would spew fluid all over the boards. Hitachis and Hitachi-based RCAs were reliable and not too hard to work on, but they had 2 mirrors and were horribly dim & blurry. Pioneers were TOUGH to troubleshoot, and eventually I refused to service Pioneers. Probably the very worst of the worst was the 90s Magnavox and Zenith. I can't comment on those without using inappropriate language.
I worked on probably 1000 projection sets, and I'm glad I don't have to anymore
Charles