Fortunately, I've been able to try several Stevia products a packet at a time due to some really nice Health Food stores that have sold it that way to try.  Every one left a funny aftertaste I didn't like.  I tried Truvia, but found it also contained other "natural ingredients" that are not listed and it's distributed by Coco-cola Co, so who knows what's really in it.  Based on the reviews here I bought a box and love it.  I use it in coffee and iced tea without any of the aftertaste.  I have given packets out to friends and they like it too.  Really great product.