It was never a question about going for gloss black on my wheels. However, I would never powdercoat them. Have heard about too many issues with cracking/metal fatigue following powdercoating. I am a spraypainter so it was no issue to spray mine. Howevever even if I wasn't a painter, I would never powdercoat them.
As Fordracing65 mentioned, I rarely wash mine either. I like the brake dust look on them too.
My 15" Avon CR6ZZ on Trigo pin drives:
