I'm curious to know a few things about what people prefer for daywear jackets and why? The sort of thing one might wear to a daytime wedding, Highland games, or maybe a nice (not formal) dinner.

In previous threads, I've seen most of these things discussed but I'm hoping to get a sort of compilation. In the spirit of inclusiveness, traditional, contemporary, and idiosyncratic opinions are encouraged. And pictures are very welcome!

1) size: tight, form fitting, relaxed roomy, or oversize?
2) cut of jacket: Argyle, Crail, Braemar, Wallace, or other?
3) waistcoat: matching the jacket, different than jacket, or no waistcoat?
4) colour: lovat green, bottle green, lovat blue, navy blue, charcoal, light grey, black, or other?
5) material: tweed, barathea, or other?
6) all of 1-5 i.e. you own a LOT of jackets
7) none of 1-5. Please present your preferred alternative!