Mostly Super 8, now and then Double 8mm, occasionally 35mm, and very rarely 16mm.
Well, a bit of both. I do some silly live-action things, and occasionally more polished short animations, but mostly just vacation home movies. But I tend to film great amounts with the intent of later editing it down into a narrative of some kind and filming additional linking scenes once I’m back home to make the story more cohesive. They’re still bizarre, no challenging that, but you can follow them.
Super 8 cameras are or can be crystal synced, too, but mine aren’t (although the 1014e has a flash contact, that could be used to record a sync track with). If there’s an interesting sound, I’ll record it wild-sync. After the film is processed, I’ll sound-stripe it, and add what amounts to a musical score with a few bits of not-very-lip-synced dialogue or ambient noise.