Wedding Bands (the rings, not the music!!!)

I've started to think about what I might want for a wedding band. My ring is very simple, just a white gold band with a princess cut solitaire (I HEART IT!)... but I think I might want something that's a little more exciting for a band, but still simple and classic (if that's even possible). I'm really loving the way diamond and sapphire bands look, but I have a few hesitations.... Is it too trendy and will it look dumn in 20 years... will it even look good with my very simple e-ring?

Honest opinions PLEASE!!!

What my e-ring looks like....


Some variation of what I would want (although I LOVE this design!)