>>3056648With film you deal with what you get. If you need the speed, Portra 800 and Fuji Natura 1600 are the only real options for color. Fuji Venus 800 is excellent but Japanese market only. All of these are fairly grainy in daylight, that's just the way things are. ISO 400 should be more than enough for daylight unless you really insist on stopping down to f/22 or something.
>Today, I tried shooting a flag with a 200mm Nikkor AI-S open at f/4 in full sunlight with a tripod and couldn't even freeze the motion on a flapping flag.With Ektar you should be getting 1/250 at f/8 or 1/500 at f/5.6. If you got less than that then maybe your camera's meter is borked. 200 and 400 should be enough for all daylight conditions. Naturally the longer your lens is the more speed you need. With a 35mm you can shoot hand-held at 1/15 with no problem, with 200mm even 1/125 is a struggle.
>>3056655If you scan your film shots, there's little reason to carry anything except for perhaps a blue filter for tungsten lighting. You can adjust the color balance like with any digital shot either in the scanner software or in post. Nearly all color film is daylight balanced, and color rendition depends on the film - for instance Portra is prized for its skin tones, while Ektar has a cool blue cast. All of it is fixable in post.