I use Boge Cartos, and have bought a bunch of 3.0 ohm's when I bought the mini. On a few juices I use, it is nice to be able to crank it to 5.0 volts with the 3.0. However, it seems as though I get a better hit with the Boge 2.0 (Have a few left) at about 4.2 volts. Maybe this is a silly question, but why does 4.2 watts seem better w/ the Boge 2.0 as opposed to 4.2 watts with a Boge 3.0. Is it just my imagination ? Shouldn't they be the same ?