Yep, sure do, and those benchmarks I referenced were at max settings too (even that stupid hair physics crap on Tomb Raider that kills peformance, TressFX)
I'm not going to claim that every game always stays over 60FPS, I'm sure it probably doesn't, but the average FPS is usually at that or above, and that's good enough for me. I honestly can't tell if the frame rate dips down into the 50s or even 40s occasionally. As long as it never dips below 30, and averages around 60 or above, I'm good. That's perfectly playable.
If you look at benchmarks on most sites, it's rare to find 660ti SLI benchmarks, but from my experience most games give me about a 80-90% gain over a single card, so it's pretty easy to extrapolate that out based on the single card benchmark.
Looking at
AnandTech | Bench - GPU13for instance
Crysis 3 at 1440p, Ultra settings, a 660Ti SLI is going to get you around 70FPS on average. That tops a Titan by about 15%, and a 780 by about 30%
SLI 660Ti/760 are pretty amazing performance right now for the price. Getting performance that tops a Titan for ~$400 is damn nice.