Either the Kodak Portra line, or the Fujicolor professional films. They are, respectively:
Portra VC: "Vivid Color" (160 and 400 ISO available): good skin tones, more vivid color than...
Portra NC: "Natural Color" (160 and 400): good skin tones, more subdued color palette but a distinct "look"
Fujicolor 160S (formerly NPS): S for "skin"; natural skin tone rendition, roughly comparable to Portra NC, but I find this film to be intermediate in look between the Portra NC and VC and a more "neutral" film. It is one of my standard go-to color negative films.
Fujicolor 160C (formerly NPC): roughly comparable to Portra 160VC; I've used very little of this.
Fujicolor 400H: only one 400 ISO offering from Fuji vs 2 for Kodak Portras; again, a more neutral or balanced film than the portras. Also one of my standard everyday films.
Both fuji and kodak also make an 800 ISO color neg film, but my experience with these is quite limited.
Both companies' films are exceptional, and great for hybrid use. I find the Kodak films to have a bit richer color, and the fuji to be maybe a bit sharper and less grainy (yes, I know that's somewhat contradictory), but this is largely a matter of opinion.
I keep the Fuji 160S, 400H, and both speeds of Portra VC on hand. You can hardly go wrong with any of these very good products.