I go a little lower with my GJ, usually 7.4 or so, but sometimes higher or lower depending on the gear it's loaded into. Hype and BB I bump up to the 8-9 range, Strawberry Cooler and Root Beer around 7-ish
Here's a bunch of Decadent Vapors flavors and roughly where I like 'em best (all DIY mixes 50-80% VG, usually with 3 ohm or so carto/atty):
Orange Blossom - 6.2 watts
Rich Pipe - 8 watts
Diablo Loco - 9-ish watts
Strawberry - 7 watts
Stout - 8.4 watts
Marshmallow - 7 watts
Custard - 6.5 watts
Raspberry - 8.4 watts
Blackcurrant - 7 watts
Cranberry - 8 watts
it varies quite a bit for me depending on hardware, but those are good ballparks for my most common setups. With all the different attys and cartos I use, I do utilize pretty much the full range, though