If you want a very tough/robust board that has all the features you want, any of the Asus Sabertooth boards are excellent, I've had them in both x79, x99, and Z170 sets. Very rugged, and functional.
If you want pretty and capable, the RGB ROG Asus boards are alright too, for my 6850 Broadwell E system I'm using the Asus STRIX board. Lots of RGB color options/patterns if you care about that sort of thing, and good fan controls/bios/etc too, easy to overclock and do other gamer-y type things simply.
I think it's hard to get a "bad" MB if you stick with the major manufacturers.
RE SLI - I've been using SLI since the 12mb Creative Labs cards were around in the late 90s. Had 680s in SLI, 780ti's in SLI, and now have a couple systems with 1080s in SLI (and a single Titan XP). I won't get SLI again unless they radically improve both the amount of titles it supports, add VR support across the board, and also improve how it performs overall. There are only a few titles I've found that it has really made a difference that I cared about with, and that's running on 27 to 34" Gsync 1440p to 4k monitors all capable of 100 to 165hz display. As others have said, there are only a couple very obscure things that SLI works with in VR, and even on regular LCDs, it's not worth the cost to performance, or cost to PITA ratio to bother with SLI anymore. For flight sim players, AH, DCS, IL2, etc - SLI works either poorly or not at all in LCD mode, and not at all in VR. I've come to the conclusion now "what's the point"...
I ordered 2 1080tis to replace the 4 1080s in 2 of our systems, and won't be SLI'ing them other than perhaps plunking both ti cards into one system just to fool around a bit with 3dmark/tests.
Put the extra $ into either a VR Rift or a better LCD IMO.