I would never own a black argyl jacket since it really is "neither fish, flesh, nor fowl." The jacket is OK, but, as stated above, since it's the most owned and worn, I don't want one. It's almost as if one wears it because one doesn't know what to wear!

For "dressy" day events, my tweed jacket and waistcoat look better than an argyl any day. Add a black tie, and it's almost dressy. And in the US, when style and grace are dying a slow death, I'd be dressier than almost anyone else in the tweed. Even after dark, it's OK around here (Atlant area) to wear tweed when others are in sports coats.

For "dressy," I'd do the prince charlie. It's exactly the same as a tuxedo--not formal dressy, just plain. You can add a white vest and tie and look pretty spiffy, though. And never--I mean never--wear a plaid with a charlie. You'd look loke someone who wanted to dress up but didn't know how.

For really "put on the dog" dressing, I wear a Montrose double-breasted doublet with a beachen feile. The extra wool piled over the shoulder attached with an amethest brooch, the lace at the throat and sleeves, and the fur sporran will be as dressy as anyone you will meet. You'll never be under dressed in that.

That's all my own opinions, and few will agree. I must add the caveat that I am quite old and conserviative.

I guess we have all shown our own prejudices here, and I guess you are over adivsed. So, have some fun. Decide on your own level of formality, and go for it. You'll look pretty sharp in anything that invloves a kilt!