There really is no perfect ratio bc it depends on what you like and what equipment you use. If I had to pick one though I'd say 80/20 PG/VG is prob one of the most popular ratios. I find 50/50 juice is alittle on the thick side and clogs up cartos quicker. VG does produce a lot of vapor, but it also dulls flavor and TH. Also high VG juices doesnt work as well in tanks and doesnt wick as well.Most of the juIce I make and vape is either 80/20 or 70/30. 80/20 is a very good ratio bc it gives great flavor and TH but also produces a nice amount of vapor. I think 80/20 is also the most versatile Bc it works well in pretty much everything. It vapes well is carts, cartos, carto tanks, and wicks much better than high VG juices