If you're not sensitive to PG (and honestly, the only way to find out is to experiment with different ratios), then, imo, 50/50 - 60/40 is the way to go. PG not only carries flavor better, but is thinner (as I'm sure plenty of people on this thread have already mentioned) and will wick a lot better (i.e., will flow through your wick and keep it wet throughout a lot better). Maybe that's the problem you're having... I'm not sure if that's what you mean by juices "not vaping well," but I hope this helps a little.