Thanks kyboonefan, that helps a lot.

One other issue I have is that I bought one of those new Weber Q grilles. It uses the 1 lb disposable cylinders, but it expects the narrower shop kind, rather than the wider camping type. It has a support hoop to hold the cylinder, and the camping cylinder won't fit. Fortunately, I tested the shop cylinders on my camp stove, and it works fine, so now I only keep the shop type cylinders around. I got a 20lb tank adapter for it, and that's what I usually use when grilling in the back yard.

I think I'm going to get one of those refill adapters, but only use it in a pinch.

By the way, does anybody know if recycling places take empty propane cylinders? That would make me feel a lot better about not reusing them.