Good stuff. The original Killer Kustard has that thick and creamy mouthfeel and a pleasant, smooth custard flavor that isn't too waxy like most other custards I've tried. Killer Kustard Strawberry is the same Kustard base with a hint of strawberry in the background. It's not a candy strawberry but not quite realistic either.
On a scale of 1 to 10 in the sweetness department with 10 being Beard Vape's #71 and 1 being unflavored VG I'd give KKS a 6, basically the same level of sweetness as the original Kustard.
The only gripe I have with this juice is that the strawberry is a little vague in this mix. If you bite into a real strawberry it's sweet, tangy and flavorful. The strawberry in Jam Monster strawberry is an example of strawberry done right. Here it's kind of one dimensional. It doesn't have the sweetness or the "bite" I was hoping it would have.
All in all this is a solid ADV and good to have around if you're burned out on sweeter juices and want something more mellow. 4/5