Ok, I've bitten the bullet and don't have any regrets.
Yes it's extremely expensive, but my hardware collection is almost complete now so I don't have much spending in years ahead. I've tried it with anything from an Intel 8088 system, 90s Pentium systems, Core 2 Duo up until a few modern PCs via DVI input.
The good: Spectacular image quality for sure - which is the most important part! It's a wonderful panel and works great for both DOS, Windows 3x/9x/XP gaming. With 3 inputs I can have 3 PCs hooked up at all times (Currently a DELL OptiPlex Micro which I use as my Retro PC for DOSBox and GOG games, Pentium III 1000 MHz for Windows 98 gaming, and one slow system for DOS gaming. Love having the large 21" 4:3 display.
The bad: Well, it's not a CRT, and for older games with low resolution the image becomes "blocky". Will regret throwing my SONY 21" Trinitron 20 years ago, but live and learn... I also miss an "Auto Adjust" button. Very handy for switching between different graphics cards. Now I have to enter the menu each time which is kinda' annoying. And, I wish there was a speaker and HDMI input instead of DVI. That would have been perfect for use with all my retro mini systems like the A500, C64, NES, SNES etc.

Simmerhead
¤ VGA-era DOS Gamer
¤ Vintage PC Hardware Collector