I'm looking for a bright, sweet ry4 with only a hint of tobacco. It's the sweet caramel taste I like best, but the few I've tried are tobacco in front with only hints of sweetness. I'm looking for the sweetest ry4 I can get, DIY or ready-made.
This list of Sweet RY4s (from the Categories page of The Big RY4 List) is old — March of 2015 — and getting long in the tooth, and some of the retail RY4s listed are not even available anymore, but it will give you ample material for Google searches:
Dessert/Sweet
AltCig RY4
AltSmoke HighCaliber Our 4
Awesome Clouds AC3
Bloog RY4
CopperCreek Twisted Tobacco
CrystalELiquid RY4
DIYFlavorShack Sweet RY4
EcigExpress My 4
GoodEJuice RY4
GoodProphets GP4
GreenhouseOne RY4
Hangsen RY4
Janty RY4 (DK Series)
Janty RY4 (Classic Series)
Janty RY4-X (Classic Series)
Janty RY4 PG (Elixir Series)
KalamazooVaporShop RY4
KickBassVapor RY4
MaddcattVapors MaddHatter RYJ4
Mom&PopVaporShop RY4v2
Mom&PopVaporShop RY4
MountainOakVapors Gambler
QuickNicVapor RY4
River Bottom Fog Sauce KillR Y4
SmokeForPennys RY4
SmokelessImage Volt RY4
VapeDoctor RY4
Vapor4Life Jammin
Vapure VY4/Liberty-Flights LF4
Vixen Vapors RY4
The trick will be to find one that is light on tobacco with stronger caramel. Often the sweeter, more dessert-like RY4s emphasize vanilla over caramel.
I'd cast a personal vote for
Smokeless Image Volt RY4 — inexpensive, sweet, and really tasty.