Definitely some nice pics here! Here's the desktop for one of my Spaces with 3 2560x1440 screens + my 11" MBA on the left since my desktop isn't exactly portable
Three screens is so much better than two. It's not so much having 50% more screen (which is great), but it means there's no line right down the middle.
I've started using the MultiSpace app to automatically split up pics and set the background for each monitor automatically.
Now, if Apple and Dell would make computers and monitors with narrow bezels so there's less of a gap between the screens!
Actually, if something like a 4k 34"-40" monitor came out in the next few years at a "reasonable" price, I'd be happy to give up a little resolution (8Mp vs 11Mp) and area (about 680 in^2 vs 900 in^2) to have a simpler setup and no lines between monitors and no headaches with OS/X's bizarre multi-monitor support. In the meantime, a 27" iMac with 2 Dell u2711 monitors is a pretty amazing setup for a not-insane amount of money.