Best Era for CRT tvs?

[Electronic M]

One thing I realized is that we've discussed Color but not monochrome. I'd argue monochrome's best years were about 1958-1975. After tube designs became standard/mature (as long as you did not buy cheap crap) you usually got a good performing set that would last ~20 or more years with little maintenance. Heck I've got early 60's Zeniths still working well on original caps.