Our Open Range came with 3 20-pounders, and I think it's a great setup. First of all, I can actually lift them when full, and I'm usually the one who ends up getting them filled. Plus the propane bay is under the fiver nose which means you have to bend over the whole time you are loading or unloading them. Second, there's always a spare back there, even if you've already switched the valve to the second tank then forgotten you did that. We always take them to a local place to get them filled/topped off, but I like the fact that if we were out camping I have the option of doing a swap at a local convenience store. We do some cold weather camping, and I REALLY don't want to run out of propane.