Wide gamut displays can be problematic:
http://www.gballard.net/photoshop/srgb_wide_gamut.html#
Unless you are experienced with color management and really need a monitor capable of rendering most of the AdobeRGB color gamut, you are probably better off buying a high-quality sRGB monitor like the NEC MultiSync 2490WUXi2-BK 24" Widescreen LCD Display (
http://www.bhphotovideo.com/c/produ..._BK_MultiSync_2490WUXi2_BK_24_Widescreen.html)
You will also save a lot of money compared to the $1000+ wide gamut monitors favored by serious photographers.
FWIW, I'm a pro with 30+ years experience who has no problem getting matching prints using an "ancient" iMac 24" Core2Duo and an HP Photosmart Printer. I only shoot RAW and edit in ProPhoto RGB or AdobeRGB depending on the software that I am using. Using the manufacturer's papers keeps things simple and prints look great. A matte screen and proper display calibration help a lot, but I don't think that relatively pricey hardware calibration is necessary for many people. I use SuperCal software (
http://www.bergdesign.com/supercal/) and it works just fine for me. Caveats: My prints are for personal use, not for sale. The kind of work that I do is published online and in various media. If I was producing prints for sale and using third-party "art" papers then I would have different requirements.
My iMac is getting a bit long in the tooth when it comes to current software requirements. The "glassy" iMac displays are a deal-killer for me and I don't need the processing power of a MacPro, since I mainly use Nikon Capture NX 2/Aperture and rarely Photoshop. The new MacMinis, while not as powerful CPU or GPU-wise as the iMacs/MacPros, are very appealing to me. I think that the $799 MacMini with the discreet GPU is the sweet-spot in the current MacMini lineup, but I wish that Apple would offer a "headless iMac" that could be used with an external display. It will probably never happen, but one can always hope!