I had SSS S0 & 2 then went SB for S3. I loved it, but what i found was there were times i wished I had the SSS. That said, I loved the look of the SBSS with the Milanese loop. Had a year off with SG Alu for the S4 and went SSG this time for the S5.
Love it, but I think the next one will be SSS. The main issue are the lack of matching lugs for it. Third party are all really yellow gold and the Apple Leather straps I have, I just see the silver all the time.
That saying, IMO the best combo is the SSG with etc SSG Milanese. Absolutely stunning.
As an aside, I have loads of sports bands/loops, and nothing beats the SG Alu with those. Maybe I've got too used to seeing the SG for a year, but the SSG just looks weird with them to me at the moment. On that subject, does anyone know if Apple sell the stone spirts band with the gold pin separately?