In all my experiments with artificial and natural non-sugar sweeteners I've yet to find one that didn't:
1) leave a bitter after-taste in my mouth (that lasts for hours); and/or
2) give me severe (!!!) gastric distress.
I'm trying a new brand of stevia (Sweat Leaf) and it's almost as bitter as all the others.
I've begun to wonder if this is genetic, similar to the hate/love camps for cilantro or the hate/love camps for Brussels sprouts and other high-sulfer foods? Apparently not everyone thinks that cilantro tastes like soap the way I do?
The only artificial sweetener I ever liked was sodium cyclamate (the one calorie-conscious people went crazy over in the 1960's -- marketed as Sucaryl and in my favorite soft drink back then, Fresca) and of course that one was banned and despite serious questioning of the science behind the ban, is illegal to use in food production in the U.S. -- go figure. I could get sodium cyclamate in Canada, but the ban still makes me nervous.
As for the sugar alcohols (sorbitol, mannitol, xylitol, etc.) anything ending in -tol is guaranteed to make me ill for 24 hours...or more!
I alternately accept my fate or experiment, depending on my mood.
So far, not so good.