Thanks. To be honest I'd have preferred the DELL S2417DG but no place here has it and importing it will cost me just as much as the s2716dg.
I've got the S2716DG and it's fantastic. I have a "korean apple samsung" IPS-panel (It's one of those Qnix that was popular years ago) next to it and the difference is negligible honestly.
EDIT: I've just used community provided colour profiles, and haven't bothered calibrating them myself. The biggest difference (besides view angle ofc), is gamma/contrast. Colours are a little bit matte/washed out on the S2716DG compared to my Qnix. The earlier versions of S2716DG has a screen filter that's kind of over the top, and annoying, but one get used to it. That's actually my biggest gripe now that i think of it... Newer revisions have a much less aggressive filter according to people though.
That said, i got mine almost at release, and if i where to buy one today i'd go for the S2417DG instead. I haven't seen how 1440p looks like on a 24" monitor but for me, 27" is honestly too much. I actually have two 1440p 27" monitors side by side right now, and it's actually quite annoying. The Qnix was a gift to my GF (still is), but since it only does DVI we need an active mini dp to DVI adapter to connect it to her mac. I won't pay for one and she won't because we both think mini dp is a stupid format. But i digress...
Right now i'm waiting for a 1440p, 24" 240hz monitor that will replace my S2716DG, but i need to upgrade other parts before anyhow.
Also, someone mentioned ULMB earlier. My experience with ULMB have been quite negative. It introduced significant eyestrain for me, in a way that a CRT never would've.
For comp gaming i recommend running as high fps and as high hz as possible. ULMB is restricted to 120hz right now, and g-sync does not offer anything for someone playing competitive fps. G-sync however has made my GTX 670 last a year or two longer.
If you get the S2716DG, Check out this thread! You'll find a lot of profiles there!
Also, Dells return and warranty policies are top notch, just wanted to add that.
http://www.overclock.net/t/1577511/dell-s2716dg-1440-144-hz-g-sync-owners-thread/3500_100