Thanks for the replies all, I've just returned my predator because of some issues (not reading atomizer/reading atomizer wrong/getting very high voltage/screen going out/etc) I think my issue with the tank was after knocking it over the first time the bottom part (where the air vents are) was loose, when liquid would get down there it would leak out. I really hate that about that elabo tank, other than that issue it was a great tank. I purchased an alien since then (baby tfv8 and big tfv8 tanks) which seem to be much better designed (though I do really favor the elabo tank's refill vs the alien tanks). For the predator vs alien, I really liked the predator mod overall, never had an issue with the 510, the tank was great except for the crappy vent part on the bottom. I'll be getting store credit for my return, maybe wismec will have an updated version soon! As for the juices, the store still recommended max PG for my sub-ohm, but I have since been buying ejuice online and getting great deals (@ .15 per ml vs .50 per ml in store) currently vaping 70/30's and 80/20's @ 6mg (that seems to be pretty standard numbers for ejuice distributors). Thanks all for the advice!