Upload & Sell: Off
Another good U2713HM review: http://www.tftcentral.co.uk/reviews/dell_u2713hm.htm
Thread discussing U2713HM: http://forums.overclockers.co.uk/showthread.php?p=23479482#post23479482
Dell has free return shipping and no restocking fee, although apparently only for a limited time, so it doesn't hurt to try a U2713H while it is discounted to $850. I returned a U2412M to Dell for free and without hassle.
I've been looking for a replacement as well for my 2405FPW, which now has severe image retention and backlight issues that make photo editing a bit painful (sometimes I can't tell if the sky has actual clouds, or it's my monitor). I bought 2 U2412M monitors last month and returned them, then bought two U2713HM monitors which I have now, and have two U2713H monitors arriving this Thursday. No, I do not intend to keep all of them.
First my background: I'm an amateur photographer who occasionally does prints, but I'm probably nowhere near as attuned to colors as some of the people on this forum. I do a lot of software development, however, and stare at text for most of my day.
Overall the U2713HM monitors are great. The image quality looks excellent and the 2560x1440 resolution is amazing for photo editing and software development. On a black screen I notice some uneven backlighting that manifests itself as a yellowish tint in the lower-left quadrant. There's a picture on the overclockers thread that depicts the problem, although it's not as bad for me and in practice not an issue since most of the time I'm staring at content instead of a black screen. After calibration with my Spyder3 Pro I was able to produce prints on my Canon Pro9000 Mark II that pretty much matched the screen. That is good enough for me.
What bothers me more is an uneven "glow" that is apparently common with IPS displays. If the screen is entirely black, the "shininess" of the black depends on how I position my head relative to the monitor. I don't recall my 2405FPW having this problem, but I saw it on both the U2412M monitors I returned, as well as the two U2412M monitors I have at work. It took a while to get used to but now it doesn't bother me as much, plus it's only really obvious in a completely dark room.
So why am I thinking of returning my U2713HM monitors? By far the biggest problemm I have is this buzzing sound that consistently manifests itself on text-heavy pages. This happens with both U2713HM monitors that I have, and is commonly reported by others. I see it most often with Wikipedia, but have experienced it on other sites as well as during coding. The easiest way to repro is to open Notepad and fill it with #######.
I don't need wide-gamut support, and given the amount of non-photographic work I do I'd actually rather have a cheaper non-wide gamut monitor like the U2713HM. But the buzzing sound is a killer, so I'm going to give the U2713H monitors a try. If they buzz as well then I'll probably go back to dual U2412M monitors until Dell can release non-buzzing 27" monitors, or maybe I'll go with another manufacturer.