hi Liz,
I'm with you 100% on the overdosing Splenda thing. Personally, I think it's the maltodextrin filler not the sucralose that's the offender. I notice the same "aftertaste" with the bulk SugarTwin (cyclamate) which also uses maltodextrin as the filler. Plus, I find that maltodextrin exerts an unpleasant effect on my gut, just like sorbitol. It is afterall, a carbohydrate polymer made from grain.
Liquid SugarTwin (cyclamate) is additive-free and zero carb. I think Sucaryl is the same (in Canada). Some No Name and other generic sweetener packets are made with cyclamate and dextrose. The carb count is exactly same for the brands made with maltodextrin (0.5 carbs per packet, equivalent to 2 tsp sugar) and I find my tummy is happier with this ... easier to digest, and I notice less bitter aftertaste... and I can use less, since the dextrose makes it seem a bit "sweeter".
Stevia -- I gave that a second chance after reading some of Wa'il's posts that he uses and likes it. (I'd tried it eons ago, before it was popular and widely available .. back then, all that was available was the green powdered leaf ... it tasted like some horrid algae-moss-crust scraped from the forest floor, only sweet ..
). Anyway, I bought a clear liquid concentrate, and find it closely resembles the SugarTwin's taste, only more concentrated. A few drops goes a long way. The "aftertaste" is very mild, actually I find it rather pleasant. The bottle I have is made by Now, 10 ml cost $2.99 at Superstore ... there were larger bottles for $8.99 ... it's extremely concentrated, this little bottle is lasting quite a while ... it has a special dispenser top, so comes out a drop at a time. In fact, it's recommended to dilute it in water. Only problem is, there's no "sugar-sweetness" equivalency ... so you kinda have to go by your own tastebuds. It stays stable when heated, so it doesn't lose its sweetness when you cook with it. Some of the commercial whey and soy protein powders use stevia as a sweetener.
Doreen