Usually, my go-to film is Kodak Portra 400, though recently I took on a commission which would push me away from my usual subject and outside of my comfort zone. I used this opportunity to try a film stock which I've always been meaning to try but never really found the ideal situation to use it. Kodak Ektar 100.
Deeply saturated and with a bold contrast, it's probably the anti-Portra (Portra is rather low in saturation and contrast).