Quote: "27" monitor. Any good reccomendations?"
I recommend a big desk.
I read some reviews and a little research on monitors for graphics artists. Viewsonic is mentioned many times, so is Apple if price isn't an issue.
I use a 24" Westinghouse and I'm pretty happy about. Only thing I'd change is the shiny black border and a sturdier stand. When will manufactures realize that not everybody wants shiny black surfaces that distract the eye and cause excess strain? My westinghouse was the only screen I saw in BestBuy that appeared to get brighter the further away I stood. It was also nearly $600 three years ago.
I had a professional series ViewSonic before I bought the westinghouse. It was a CRT but it had an amazing picture that took a lot of courage for me to finally leave behind for a lame LCD. So I can't speak of the quality of ViewSonic LCDs, but in my experience they've done great in the past.
If Sony makes an LCD monitor, consider that. I have a 50" Sony TV and in my opinion it recreates colors more accurately than Samsung. Samsungs look great, but they tend to raise the contrast levels and darker the shadows for a real nice image. The downside to that is you won't see very dark objects as they'll black into blackness. My Sony handles very dark shadows very well without having to brighten the whole screen, causing a washed-out and faded look on the brights. If Samsung monitors do the same as their TVs, I wouldn't get one for graphics design.
Quote: "I am not really sure most people can reliably tell the difference between 1ms, 2ms and 4ms response"
I'm sure you would with motion when you start seeing ghosting affects. Number one reason why I hate LCDs.
Whether or not you like Apple, they do make some amazing monitors.
HP DreamColor (30-bit) monitor sounds nice, but with a $2k price tag I don't think you want it. Has a crappy response time anyway.
According to Newegg, Asus seems to have the highest ratings on several of their monitors. Odd, considering I never knew Asus made monitors.

"Any sufficiently advanced technology is indistinguishable from magic" ~ Arthur C. Clarke