1920x1200 = computer monitor, 1920x1080 = HDTV
Mine isn't for sale, but definately spend the extra for a Dell 2407wfp. I have seen the display quality of dozens of different brands, and the Dell is literally 4 times better picture...
I think I've got three of them left... shoot me a PM with offer and with the details off of your old one. I've run into a couple of them that run different amperages, so just to be on the safe side.
Just make sure you get the full-size dock (with the PCI slot in it) as the smaller one does not have enough power for dedicated GPUs (I've been told... never tried it) which would be a bummer. Better safe than sorry IMO, so I use the...