Summary: I can easily compare, side by side in portrait mode, two 8.5x11 pages. Text/video quality is extremely good and with the Dell sound bar attached, you have a great viewing/listening device. Highly recommend the product.
Summary: I purchased this monitor and it is amazing. I no longer need my glasses at 60 to read the monitor. The only complaint is I called back a week later to get another one for the Computer I do detailed work on and the price had went up over 100 dollars. Since Dell has gone to a new Monitor which costs 1500 dollars I guess that is the reason. I will just hope that it goes back to the old price so I can but one.
Summary: So far, I really like my new 30 inch Dell. I'm not an expert and can't critique the monitor in great detail as some have (edge lighting issues and dead pixels etc.). To me, it either works or it doesn't. I don't use it in a darkened room, just a home office. I have a standard Dell Studio PC connected to it with HDMI that I use for everyday common functions ... online research, news, email etc.
Summary: Big, bright and mostly pleasant. The matte display is welcome if you're like me and are tethered to using glossy laptop displays for work most of the time. I picked this up after getting frustrated with digital photography over the past ten years. I loved being in the darkroom and seeing a medium format or 35mm negative projected large onto big pieces of paper.
Summary: I was debating whether to get a multi-monitor set up or a cinema display. I have a MBA, but also use MBP and PC laptops to connect, so I wanted something with a variety of connection options, and something with a resolution great enough to take advantage of the high end video/graphics cards on the laptops (and something that would be comparable to the retina display on the MBP).
Summary: Most everything about this monitor is awesome. Lots of inputs, excellent picture, anti-glare coating. One thing that did disappoint me is the level of HDMI support. It only supports up to 1920x1080 over HDMI, not actual HDMI 1.3 which can support the full 2560x1600 native resolution. This makes the built in sound support over HDMI fairly useless since you can't actually use the native resolution at the same time.
Summary: After much consternation about dropping one large on a monitor, and a ton of research, I decided on the Dell UltraSharp U3011. As a busy freelance writer, my computer is what props up my mortal remains and my desk is my living space for most waking hours, so I tend to choose the best quality I can afford.
Summary: I read that this display is the best 30" on the market. Unfortunately mine was DOA. It will power up, and I actually get the "Dell" logo for a couple of seconds. However, then it goes dark and nothing will make it work. No on-screen menu, no sync to any input whether analog VGA or DVI, HDMI, or DisplayPort. The manual says disconnect all inputs and turn it on to see the self test display, it should be a box saying "No input VGA", then "No input DVI", etc. Doesn't happen.
Summary: The monitor is great, the color seems great and fairly accurate (though I had a little trouble getting used to it and calibrating it). The sparkles are an issue as others have mentioned, though I found I got used to it and am happy with the monitor. If you're doing serious graphic design work, the sparkles affect how you see whites a bit and may make white areas seem textured when they aren't. On dark colors it isn't an issue.
Summary: This is an awesome Monitor. The brightness and contrast levels and colors are Lab standard. This monitor replaced my 28 inch Hanns.G Monitor, which was very good for the price, but did not even come close to the Dell in Resolution, Brightness, Color and Clarity. So if you can spend a ton of money, nothing comes close to the Dell U3011. Especially if your work depends on your Computer/Monitor, as mine does. I am a Photographer.