the rest of the gx2 line uses TN panels.
i'd say the days of the 20wmgx2 type monitors are dead as its too small a market. i wish it wasnt so, but even a 24" would be a PVA panel. I too would love to pay extra for a really good monitor as some of the budget stuff out there is pure garbage but its what joe everyon ewants.
i dont even need the fastest computer on earth, mine is not particularly fast, but i'm staring at a monitor all day, i want that to be nice. I do have a 20wmgx2 and got it about 2 months after it came out (for $600 ... and it was worth it too eventhough its about $360 with rebates now at newegg).
still an awesome panel and i like that it has the glossy coating. there is a similar HP pavilion monitor which is 24" and i think is a mva panel with glossy coat, so i guess thats an alternative. they really need to make say a 24" version or 23 or even a 22" (with 1920x1200 res like the new lenovo panel), with the glossy coating, and component , hdmi and a qam / atsc tuner (the 20wmgx has an analog which will be useless soon)