Understated wedding rings/stack?

I don’t like a lot of flash but still like expensive things... Im up for a 10 year anniversary upgrade and not sure what to ask for. Can people share their understated wedding band/ring stacks?

When you say “upgrade”, do you mean upsizing your e-ring, or adding a band? What do you currently have?

Typical at 10 years is an eternity band but if you don’t like flash....? Something like Tiffany Etoile?