I've tried several, as my ex-wife was into that kind of thing. They all taste terrible to me. Some other things that taste terrible to me that other people claim are sweet: aspartame and saccharin. They don't taste sweet to me at all, just nasty. Sucralose tastes bad too, though it at least tastes sweet, just in a really nasty way. Stevia tastes sweet too, just in a nasty way.

I wonder how much of this is how much people are used to: if you keep drinking diet soda for years and years and "acquire" a taste for it, maybe then real sugar will taste weird to you.