I love not just the Waltz but all five pieces of the Masquerade Suite - a Khachaturian fan here!
Love this unique one greatly too!
... And I really Iike how the pieces posted here are the less known ( with alr two which I'd say are alr my v few favorites )
I don't exactly have a favorite waltz but there is this short, simple ( definitely ) waltz ( or at least waltz-like ) piece ( though not titled as such ) that's abt just as close to my heart, but for the longest time ( longer than the two above ) :
Grieg - op.71, no.7, " Rememberance "