Artypa, I think that will depend a lot on your delivery system as well. What will you be using on top of your battery?
That said, nic component in juice often gives a sort of peppery quality, or makes juice taste stronger, I know because I've vaped 18mg of my All Day Vape and now use 0nic and there is a difference in the taste.
I would say get something with a little spiceyness to it, like a chai for instance. Or something tart, like blueberries. And for throat hit, higher PG, for bigger clouds though, higher VG. That part you will have to experiment with.
OR, get a few DIY flavorings, and mix up your own, that way you could flavor it the way you wish......
Do you require high VG, high PG anything special like that?