In general wsf polished would be smoother and have a better finish, but as a designer I prefer to order the classic wsf and polish manually to see the issues beforehand.
Black Hi-Def acrylate is promising, but I have yet to make a model to be printed in this material... I tried a few of my model already and they have been rejected because of the sprues. It should be good for the missiles but the price is too much (about 3x of wsf)