[Username1]

I agree completely that the Zenith '70's tubes were the best in sharpness, overall performance, and mine still looks great! I have seen this in several '70's zenith chromacolor tubes. As far as the progression in tube technology, and the companion circuitry that produce really awesome pictures my tube is the Dynaflat Samsung tube. My Panasonic 34" big cabinet "bet you can't steal it" HDTV uses a lot of the same chassis technology with variable scan speed, dynamic focusing, multi-warp-speed, dynamic spacial diffraction, inter modal dot colorization enhanced magnetically and a few other things I can't quite invent out of thin air. I think these tubes are quite similar to support the same performance claims in their advertising. I'm quite impressed with the technology they used to make a really great picture from NTSC, and put that in a big tube! But for its time, and performance Zenith Chromacolor tubes are "The Bomb!"