Don't put sugar in your tea - don't drink calories.
If sweetening with artificial sweeteners tastes "bitter", try a trick: Use packets of multiple types - one "equal", one sucralose, one stevia, for example. You get the sweetness from each and not enough of the background bitterness (which is different).
That's the main reason Coke Zero is pretty good as compared to Diet Coke - different formula, but they use two artificial sweeteners and get that affect - sweetness from two sources with half the bitterness (since each is different).
I think all the people that are going to leave have left. I don't see that many people griping about anything anymore. (I browse /r/all and I mod a couple of local subreddits, but otherwise don't participate much anymore)