WHY so few "other brands' left out there?( Admiral, Sylvania , Philco, etc)

[rca2000]

In the tv collecting realm--we all seem to come up with plenty of RCA and Zenith color sets, from the Hybrid days. Every so often a sylvania or magnavox will turn up too..but I have NOT heard ANY mention of any hybrid or even SS 25 inch admirals or ohilco sets. I have had a COUPLE of these sets..back in the day (the 1980's..) NOT ONE since then.

I was at my garage today and picked up the manuals to the admiral M20 and M25 sets. I have had one of each. the M20 has 7 tubes--the M25 is SS. Both Have tripler Hv.

The M25 I found in an alley, on the porch of a house and it was given to me--fall of 1983. It had a pretty bad westinghouse tube--and after milking all of the life possible out of that one..i replaced it with a Zenith chromacolor tube I had It worked VERY well, for several years. Then, it developd a "sync problem" i could not figure out, having no manual for it and misled by a "tech" to believe it had bad caps in the power supply...I was unable to fix it (at the time). later--the same chassis live dn i another cabinet--when I got another sync/agc module. had I been told RIGHT...I could have used that set for years more...

The M20 I received in 1981, and was not able to keep it long...I wish i could have.

Now--I want MORE of them. But they NEVER seem to show up. Why?

Is it because that Pix tube was a westinghouse and GARBAGE? THIS is my guess--the tubes were no good--sending them to an early grave.

Of course--I relaize there were far FEWER of the than the RCA's and Zeniths..but STILL...we should see one "here and there"...but we do NOT.