Agreed and it's remarkable the number of partners Stones has improved over the years.Agree, but my theory for that is that he looks much better with Stonesy beside him. And when he played on the left it was usually to accomodate Stones.
Prime and fit John Stones is in my opinion the best centre-half we have ever had and is a dream to play with for any partner
Dias also gets to play the 'nutter' next to the classy centre half partner when Stones is playing (in the classic sense of a CB partnership)