My combos are constituted by the applications and format, as I figured there's no one golden combo good for all:

For casual shots + streets (35 mm& 120) s: Kodak Tri-X @400 in FX39 1:14 (or FX44 1:14)
For night shots +streets@night (35mm & 120): Kodak Tri-X @1600-3200 in D76/Xtol 1:1
For landscapes/nature/details (120 & 4x5): Kodak Plus-X & Tma-X 100 @100 in FX39 1:14 and Efke 25@16 in R09 1:50