I spent five years in a retail jewelry store. Not exactly sure what your question is about the gold wedding band... you're saying you've got an existing white gold ring that isn't very durable and your'e looking for something better?

I was personally satisfied with an ordinary 14k gold wedding band. If it's beefy enough, it'll stand up to some punishment. If it occasionally gets bonked out of round, them's the facts of life, live with it, and take it back to the jeweler where you bought the ring and they'll be happy to pound it back into shape and polish it up real nice for you. Anything to get you back in the store so they can show you more pretty shiny things to buy.

I certainly wouldn't go with wood. That's going to be a lot less durable than even very soft gold.