The vaping community loves the Panasonic CGR18650CHs. They are very very popular. However, I get a lot of requests for button tops for users that have mods like the Provari that can't use the flat tops. Button tops are always more expensive, but - these are the cheapest I could come up with. Provari users - have at it.
WHERE: http://www.hoosiervapes.com/
$8.00