Just make sure to get one of the Premium Panel models as those are the ones that really shine. They are the high-end IPS that everyone reviews and loves. They do something like 100% of sRGB and 98.5% of Adobe RGB. I know that doesn't mean a lot to most people but to those of us in the design world it means this: Very high color representation where everything is going to look perfect once calibrated, both vivid and deep.
Though, one thing I've often seen is people say Dell displays benefit from calibration when you first get them. Unfortunately I can't recommend a good screen calibrator as I've never really used any.








