Sugar substitute/help

I wish I would have read these posts before I went and wasted money on stevia. I can't stand the after taste... yucky for me. I love the taste of splenda but my joints seem to hurt alot more when I use it so I guess I'll use table sugar in my 2 cups of coffee. I should drink it black for a few days like someone suggested and then add a half tsp and see if that's enough.