I tried a F'real Vanilla Milkshake from a QuikTrip convenience store and mixed it on the 'regular' thickness setting.
The vanilla taste of the milkshake was pretty good, and it wasn't overly sweet or overly vanilla-y. The milkshake seemed to be melting quickly, so I might try it on a thicker setting next time I have it. Overall, it basically tasted kind of like a soft serve ice cream that had been blended into a milkshake.
I wasn't able to finish my milkshake so I put it in the freezer. When I ate it later, I ate it as ice cream, and it still tasted pretty good.Food: F'real Vanilla Milkshake (regular thickness)
Source: QuikTrip, Tucson, AZ
Price: $2.50 for 1 milkshake ($4.00 for 2 milkshakes)