After seeing a lot of the armors made by the modding community, I have come to the opinion that the actual original Bethesda armors, while varied and detailed for the time the game originated in, don't look as good with their low res textures as some of the cool custom stuff. Is there a mod that updates the armors from the original game and official expansions with better resolution textures?

I've always been happy with Darknut's work.

You should be able to find all his stuff here: http://mw.modhistory.com/search?searcht=darknut


He re-textured all the armor and weapons, including the stuff in the two expansions.

(and most of the creatures, too)

I'll second Darknut's textures.