The 3 16ms displays on the market all use the same screen from what I've read so far, so each should have pretty comparable image quality. From what I understand, these displays are pretty much leaders of the pack in terms of pixel response, but are not as good when it comes to brightness or contrast ratio. This may or may not be a big deal depending on the game, and how much you care about high contrast. A couple of people on the arstechnica thread have had similar complaints about the 2000fp. Good pixel response, but mediocre contrast.
Personally, I have a Samsung 191t, and while the contrast ratio is great, the pixel response time with darker shades is pretty noticable. You get used to it to a certain extent, but it could be a lot better.
If you need a display right now, there are a couple options. Viewsonic and Samsung seem to make displays with high contrast ratios, but poor pixel response in certain shades (seems to be true for most of the MVA type displays). The 16ms displays, along with other IPS displays (the 1800fp, 2000fp, the NEC displays) seem to offer better overall pixel response time, but overall seem to have poorer brightness and pixel response than the others. Viewing angles seem to be shallower overall as well.
It may be worth waiting to see if samsung and the others come out with good 16ms displays, and mitsubishi has been working on a technique called "feed-forward" which will also help improve pixel response times (basically the best case pixel response from a regular displays would become the worst case response time for a feed-forward display). It's been delayed, but the last rumors I heard indicated release sometime in 2nd-3rd quarter.
Nite_Hawk