Kodak Portra NC for weddings - 160 when I've got the light, otherwise the 400, in both 135 and 120
Kodak Ektachrome E100G for travel - although on a recent trip to India I used a lot of Velvia 100, but that was because I had got my hands on a very cheap box of it.
I do love the natural colours and skin tones of Portra.
I haven't used positive film for years, and when I did it was Kodachrome. But in the mid 90's I tried Agfa RSX 100 and was amazed! So clear and neutral colours! Is was like clear spring water compared to chlorinated tap water.
I have a couple of boxes of Agfa Optima negative film in 120 in my freezer, but sometimes wish I bought more of the RSX in 135,