I have an HP P1230 that's a rebranded Mitsubishi Diamond Pro 2070SB that weighs in around 65 pounds. It is definitely a tank... but it can do 2048x1536 at 85Hz if necessary, and most lower resolutions at 100-160Hz. I wish I had a way to make it last forever because it is an amazing monitor. I just finally got myself to replace it on my main system with a 27" BenQ XL2720Z two weeks ago. The only reason I went with this monitor (other than getting it for a really good price) is because it has the best blur reduction features available, and I can't tolerate motion blur after using high quality CRTs for so long (had an NEC Multisync 19" before the HP). Until we get low persistence OLED displays or someone figures out how to make variable refresh rates work with low-persistence displays (for example, using gsync and ulmb at the same time), this is the best monitor for me on the market, aside from using a CRT.
My poor P1230 has had a recurring glitch involving the pixels swimming around slightly, sort of like they are under water... very odd and very scary when considering how hard it would be to replace this thing if it died. So it is back to being used only when a CRT is needed... all 65 crushing pounds of it. :p