I have a refill kit, from harbor freight, but have never used it. Apparently the valves don't always seal properly after refilling. I don't have a larger tank to refill from. I'd like to get a 3 gallon tank that I could mount underneath but the horizontal mounting tanks are $$$<br /><br />I usually pick up Worthington brand at home depot but they are now ~$3.29 each. What I like is the metal bases. They use to carry another brands that was blue and called a big boy, they shoehorned in a little more(20% claimed) propane into those. The coleman and ozark trail at wally world and target have the plastic bottom glued on. Sometimes these are not filled as much as advertised. I've picked up two and one was noticeably lighter than the other, and now I always check and shake them to determine if they are light or not.<br /><br />My single burner stove always pulls the plastic bases off, and I have gotten in the habit of running a layer of electrical tape where plastic meets metal rather than have it spill my breakfast and ruin my day. Once was enough.