<<Most companies (except princeton, samsung, and a couple of others I don't remember) actaully use the Sony Trinitron tube, so they are essentially identical. This includes such heavyweights as Viewsonic and NEC.>>
Not exactly, in fact, most companies DONT use the Sony Trinitron tubes. Let me summarize it for you:
There are only 6 companies in the world, that uses the Trinitron tubes, Sony, KDS, CTX, IBM, ADI and Mag.
And there are a few companies that use the Mitsubishi DiamondTron tubes, including Mitsubishi, Samsung, NEC, ViewSonic, and Iiyama.
To top it off, there are only 11 companies in the world that are currently offering Aperture Grille tube powered monitors.