What should I look for in a good credit union?

I don’t really trust banks anymore and I’m looking for a new credit union. This decision is based on customer service and business practices that doesn’t make me content to stay where I was. What should I look for when checking out a credit union? What I’m looking for is decent customer service. I don’t care about business hours. This is really just for savings. So I think something with a decent interest rate would be good.

I’m looking in the area between Longview and Vancouver, Washington. There isn’t much to choose from and I’m also wondering if anyone has any recommendations.