So I just stumbled across this thread.  I currently have the following cards:

Rig 1 (dedicated miner) - 3 x EVGA 1080Ti OC Gamer
Rig 2 (workstation/gaming) - 1 x Zotac 1080Ti Arcticstorm
Rig 3 (HTPC) - 1 x 1070 Founders Edition

I'm just running NiceHash on all 3 24/7.  The 1080Ti's are doing about $3 each daily and the 1070 about $1.75.  All of them are running at 60% power limit and the efficiency on all of them is around 4 H/W.

Reading what some of you guys are making per day per 1080Ti, it sounds like I might be missing out a lot more than the 5% or so I figured I was giving up by just letting NiceHash pick what I mine.

I plan to pick up 3 more of the EVGA's for the dedicated rig.