first one who vote, easy to know my choice, lol
I'm member of the eggxpert forum, and I must say that everytime someone ask for a GTX 260 and more GPU, I suggest a ENGTX , I post a lot of mine install in my builds, I give them always the same argument, "Best cooling of the industry" Those coolers are amazing, you can let them on auto setting in Smart Doctor and they do the job.
But I think Asus should work to offer the ENGTX 3 slots also in 2 slots versions, as it's DAM hard, if not imposible to SLI 2 x tripple on many boards , they actually take a little bit than 3 slots. So at least they should make them a little bit thiner to fit 3 slots.
I'm pretty sure you miss a lot of sales for the one who SLI, you have the best cooler, but EVGA is well know for their good customer serivce and their upgrade program, MSI is quite popular too, they offer the 570 and 580 in double slot
So if you ask me, for a GTX 580; if I want Single, no question ask, ASUS
if I want SLI on air, MSI
if I want SLI on water , EVGA , we know they will not make trouble to RMA a GPU even if we use an Water block or after market cooler. we simply revert to the original before RMA. Their life time waranty on the AR series is quite atracting for peoples too