I love the hemmers and the ruffler. I don't put in zippers very often, but of course the zipper foot is great when I do.
I haven't ever managed to get the binding foot to work properly. There's another modern binding foot (clear plastic and square shaped) that works a lot better, even on gentle curves.
I never have gotten the adjustable hemmer to work, either. It seems much easier to me to press in the folds, pin and sew than to try to use that adjustable hemmer. It does work at the narrow end better than at the wide end.
The old tuckers are wonderful little gizmos and the old-style quilting foot is handy for sewing around curves, even opposing curves like with Drunkard's Path blocks.
I've only rarely used the roller foot.
I've got a LOT of different kinds of darning/embroidery feet and I like almost all of them just fine.