Best is subjective to some extent. It is an IPS panel so its better then most monitors that are TN panels. IPS panels offer greater color depth and range, as well as better viewing angles.
Some people can't stand glossy displays for editing others swear by them, I personally in the second group. Their are a couple companies that sell IPS screens as well NIC sells really good budget displays they are basically re branded Lacie displays that sell for less. Dells top end IPS panels are good too. Then theirs the upper end of the scale with Eizo, many of their monitors sell for over $2000 so thats not always an option.
One thing you must take into account is that almost no displays come calibrated and even if they do monitors color slowly drifts and needs recalibrating every now and then. So you must buy a color calibrator for the most accurate color. Some higher end monitors come with them. I can personally recommend the Spyder series by data color.