Black raspberry, but here in the mid-west WHEN you can find it which is rare, they ruin it by putting chunks of dark chocolate in it. I like just plain black raspberry or swirled with vanilla ice cream.
I like vanilla, but it has to use real vanilla for flavoring. I can taste the difference. And generally now I have to buy organic if I want real vanilla.
Heck if something has 'natural' vanilla flavor it could be castoreum which is made from beavers' anal glands (yum?)