I did sense an aftertaste when I tasted a little on my finger. However, this product was formulated to match 1:1 for table sugar in sweetness and volume. As such, it is most likely something you would use in baked goods, where the correct volume matters. In these cases you would likely have other flavors, such as chocolate, which would mask the Stevia/Monk Fruit taste. I made a tray of lemon bars and didn't detect any aftertaste whatsoever.
I'm completely sold on Allulose. No blood spikes and no digestive issues. If you want something to sweeten a beverage, get the straight Allulose and use as much as you need. If you need a sweetener for baking where the volume matters, this Allulose blend is a good choice.