I have been running the S-2 for the last year, I was so impressed with them I actually sold my Meridian DSP5200s and bought a pair of Z3s for the other room.
They were good, very good, but I actually felt they didn't offer much over the S2s. I wish I had tried the Z2s instead of the floorstander.
I ran them with a Bel Canto, Quad 405-2 and Quad 909and liked the 405-2 best of all.
I have still got the S2s and love them, still running them with the 405-2 and Rel Strata and think it is the best value hifi I have ever owned.
Sitting Room - Volumio- Tidal - Raspberry Pi with Khadas Tone Board - Marantz PM7003 - Spendor S6e + Rel Strata.
TV Room - Arcam Solo Movie + Mission 752s + Mission 75c + Rel Strata.