I tried Xylitol, but it made my symptoms flare up. The stevias I like are:
For Stevia Extract Powder – Now Foods Better Stevia Extract
For Green Stevia Powder – Planetary Herbals Stevia Powder
For Liquid Stevia – Planetary Herbals Stevia Liquid
I have heard good things about NuNaturals’ Alcohol Free Flavoured Stevias, but haven’t been able to get my hands on any.
Hope this helps.