As far as tanks go, you definitely want either the 5.5ml Phat Liquinator or the 5.5ml J-Tanks from Electronicstix because the diameter of the tank matches the Silver Bullet. As far as the carto, I've used the 3.0ohm Boges for some "in your face" vaping with 6volts. There's no burning taste or anything, it just hits you good and hard. I normally just use the 4.8v nimh batteries with my Silver Bullets.