I, too, prefer more vapor than TH... and flavor with my vapor.
VG = vapor
PG= flavor
NIC = TH
with those (prementioned) basics in mind, one can easily adjust any juice on hand.
Personally, I like to always have on hand the same flavor in VG (MsTsBakery) and PG(VaporTalk, LiquidXpress, etc) and mix in an empty bottle (or direct drip) as needed.
I also buy premixed VG/PG blends. (TastyVapor for example)
VG and Cartomizers don't always get along. The Direct Dripping method and Bottom Feeder (ReosMods for example) PV's certainly work nicely though.
GoodProphets has a nice VG line that is thinned appropriately for cartomizers. You might want to give their VG a try if you're using carto's. I'm sure there's others out there, but I can only think of the one off hand.
It's all trial and error and happy surprises. Finding the right combo for you personally is a personal adventure. I hope these tips help you with your journey. Good luck and Happy Vaping!