I hate the Spider-Man costumes from the first three. The webbing was garbage, and I didn't like the sculpted-on muscles.
As far as Superman goes...his is pretty much the easiest to use on-screen, because quite frankly he doesn't need anything fancy. I wasn't saying luthor's wrong, far from it...I just wanted to point out that 100% accuracy sometimes doesn't work as far as comic costumes on-screen go. Superman is the one exception that I can think of, because again he just doesn't need anything else.
I didn't have a problem with the updates to the suit in Superman Returns aside from wishing the emblem was larger, because the basics were still there. Do I wish the colors were brighter? Sure do. But they would have clashed with the palette of the film. I liked the addition of the seams to the outfit and the texturing, because it was more visually interesting to me.
Again, I'm not saying those changes needed to be made. They didn't. I just thought they looked good on film, and today's audience (not us old farts) needs more visual stimulation and may have a harder time accepting a guy in simple spandex.