You could also try 5volts with the SB. Just got mine Saturday after a button mishap. After a frustrating day of fidgeting with teh ultrafire 188 charger I finally have the batteries working correctly. So far my 5 volt bats have not come in yet, but I am eager to try it with some of my dual coil cartomizers. Still need to get a 2.0 or 2.5 attie to try 5volts with dripping. All mine are 1.5 or 1.8 ikens. I got the UltraFire 2900 initially and today just picked up an 1600 IMR battery. So far I love the IMR battery, seems to hit hotter longer than the other batteries.
So after 1 1/2 months of vaping and being a noob I have tons of stuff now, sure you will be headed in the same direction. I started with the ego and they are great little devices, but hardly consistent.
So far I am loving my SB, good choice man.