I use a saccarin based sweetner (in use in Switzerland) both in food in powder form and in coffee as little pills. I don't find it has a bitter aftertaste so perhaps they have improved it now since you last had it
I never use it because I take my tea and coffee black without... but I thought there must be some of you guys who do and would be relieved...
I consider myself lucky to be DM T2 without a sweet tooth... it's the noodles, toast, chips and whatnot that ruin my day!8)