For looks, I like ebony (except the helmet). But for practicality, dragon plate is my pick. Materials are cheap and available thanks to the dragons attacking you every 10 seconds. It can smithed up to maximum levels. And the look has grown on me. I kind of like glass in the light path (or rather malachite). Plus as the dragonborn, you do want to advertise yourself as a dragon slayer right? How better than to outfit me and Lydia in full dragonplate?
I use daedric for the weapons (and sometimes ebony). They really should have given us dragon weapons (presumably dragonbone handles and blades made of something else like ebony, steel, etc.).
I do like the look of the blades armor too.