I love Kick Bass Vapor Caramel Cappuccino. I order it with 70 percent PG and I get huge plumes of vapor. Plus the juice is delicious. I also get great vapor is Malty Toffee by BWB. I think the PG percent is key to huge vapor. Anything above 80 lacks a bit of vapor with most juices, but the throat hit is always better with 80 or more.
I find 70 percent PG is just right, although I always need my kick you in the throat juice for those occasions I need it, but I also know the vapor production is going to be less.
One more thing.. I send the suggestion for a LR306. It is in a different league compared to a 510, or even a LR510 in my opinion. I have also only used Joye brand attys for your information. I hear awesome things about Cisco and Ikenvapes attys.