Ive done a bunch of research on these since i bought an Avanti Mini Pub
and it came with 4 empty mini kegs. Midwest has a good selection of accessories for the mini keg systems http://www.midwestsupplies.com/searc...=&q=party+star
. Basically, you prime with sugar and let it naturally carbonate. The best mini kegs for re-use are the ones with just a bung hole on top and the gravity spigot at the bottom. Stay away from the ones that have an internal c02 cartridge, they can be re-used but its a pain to clean and sanitize in the little nooks and cranies. I've been getting 5l mini kegs of D.A.B and 3.1l mini kegs of Cool to re-use. Heres a couple of videos on the subject.
-If you blame life, you blame who give it. So don't blame life, blame the way how you live it.
-I may not be as good as I once was but I'm as good once as I ever was!
-Not a big fan of beer.