I've been sleeping on an uncomfortable air mattress for a few months now and I'm dying to get a new bed.

I know nothing about mattresses and don't want to get taken to the cleaners. Here's the pertinent information about me.

I sleep on my side. I'm 5"11 and 240lbs. I don't want to spend over $650 for a queen size mattress, frame, and boxspring. I'm in Vancouver, WA.

I might have to adjust my budget if it's unrealistic.

I know I'm either going to get a latex foam or springs mattress. Any help or advice?