DIY Flavorshack has a great RY4 and they offer it in either PG or VG. I have tried both and IMO the VG is much better. If you add a little of their Carmel Macciato to the RY4........delicious. The two flavors compliment each other so very, very well. Smooth. MyFreedomSmokes also has a very, very nice RY4. I chose to get 35% VG and I am not disappointed. This one has a stronger, very developed flavor. Delicious as well! These were at 18 mg.