I love so many of them I know there are even newer blends coming out all the time @MysticRose uses them frequently.
As do I but she has some of the newest flavors.
For my favorite Picks of theirs I'd say
Blueberry Acai Pomegranate
Strawberry pastry w/ frosting
Cookies & Cream
Peanut Butter cup
There's a whole new learning curve when using these guys as you may use more than a typical pg flavor and the steep time increases but when they come around they are delicious. I just finished a batch that was 2 months old tasted better today than it did a month ago they just keep getting better and better.
I like Birthday cake , vanilla custard , cake batter , marshmallow , vanilla ice cream but have yet to find a true % where I am in love with these.