I got the powdered kind because it was reasonable cheap but it was pretty awful. My understanding is that the pure liquid forms don’t have the bitter aftertaste but it’s ridiculously expensive. I’ve been using Perfect Sweet Brand Xylotol (link here
http://www.alternativehealth.com.au/...fect_sweet.htm), it’s not calorie free so you still have to watch your portions of it a bit, but it’s natural, tastes great, and it’s actually good for your teeth! I use it in my coffee, smoothies, baking, it’s been a great universal sugar substitute for me.