I have had my mini for 1 week now. From this forum I was told: 1) You will use more juice with LR atties, Yes I do, 2) LR atties take some of your battery life, Yes it does, 3) the 306 LR atty gives a little more flavor and vapor than the 510 LR, yes it does, 4) the 306 is a little more finicky than the 510, yes it is, 5) start LR atties at 2 ohm, I did and great starting point. My hats off to the veterans of this forum, you know your stuff and made my transition to Reo Mini very easy. It's a beast. Thanks.