I started with 2 G6 starters, and 10 different Halo juices. I do like the size and cig-a-like look of the G6; but a couple weeks in, I realized that the battery life was limiting, even with two batteries. I thought cartomizers were great too, until a couple of them quit on me, or I inadvertently mixed two juices. No matter what method I ude to wash them out, they never taste quite the same as they did when new, with the original flavor.
So, I'm now on stage two (three, if you count the convenience store disposables), which is standard eGo type batteries and clearomizers. The taste a draw on these is generally superior to cartos, at least in my limited experience.
I just bought a Vivi Nova and Smoktech tank, and I guess it's time to move on to the VV stage. At this point i pretty much accept the hit that my batt and clearo give me; but I can see that the ability to control the coil temp better will allow me to dial up just the right vapor, which affects the taste.
As far as Halo's juices; I have yet to try one that was bad. This is a quite different experience than I've had with other vendors. I have, at best, a 50/50 experience with all the other juices I've tried (about 30 at this point). Tobacco seems to be a problem child for independent vendors. I can taste a distinct perfume aroma to most of them, that indicates they come from the same base. What that is, I don't know.
Mount Baker Vapors (MBV) has work best for me outside of Halo. I've loved all but their tobacco, and they're less than half Halo's price. And... and... they threw in a free 15ml sample bottle with my first order. Awesome. If you like minty, try their White Out, Tidal Wave, and Cucumber mint.