Summary: I've been using this monitor now for about 10 months. I use it both with a MacBook Pro from Thundebolt to Display Port, and with a Windows 7 based PC through dual-link display DVI. I was previously using both a Samsung T240HD 24" TV/monitor and an older Viewsonic A95f 19" CRT monitor. For general computing I used the Samsung, but for color accuracy and wider color gamut for photo editing I used the old CRT Viewsonic.
Summary: PROS: The image quality is excellent. The color is rich, I cannot discern any difference in accuracy between this and my 27-inch Apple Thunderbolt display. This works very well with my mid-2012 MacBook pro. CONS: (1) Very bright --- during the day, with the lights on, I have to set it to 5% brightness, or it fatigues my eyes. (2) The stand is wobbly; it bobbles around a bit while I type.
Summary: Picture quality is really good, I can even work during the day with the windows open. Compared to the super glossy monitor on my iMac which reflects everything in the house... including me. The big issue I have with this monitor is the base, it's not well designed and the monitor jiggles even when typing... as I'm doing now. It's a poor design to have a big 27" monitor sitting on crappy base.
Summary: Magnificent resolution. For photography, the colors are spot on after calibration (Coloreyes Pro, Spyder 3), and ports are plentiful. Also (with Windows) run ClearType and inspect it closely with a magnifier. The Samsung variant on IPS is very good but comparing it with an iPad 2 and other IPS screens, it does show a color shift at the widest edges along with backlight bleed-through in the lower corners.
Summary: I purchased this for quality text rendering...resolution and general business applications/systems management. My prior monitor was the PVA panel based Samsung 214T.... a higher end display also, which has served me well over the years. Comparing the two side by side is almost comical. The clarity, brightness and contrast of this monitor are so far superior....it is not comparable. This could be partly due to the PVAs age (not sure).