Have you tried the porridge oates that come in the little packs - I just add water and pop in micro for 2mins and they are gorgeous and filling and low.
I have these often with skimmed milk and canderel fluff sugar 2 1/2 total Discovery points. I think they taste like warm rice pudding..... Lovely ( if you like warm rice pudding).... Lol
With the syrup one you honestly dont need any sweetener - Tescos have them on offer at the moment so i've been stocking up on them, I would definitely recomend that one for sweetness - just DON'T get the original one coz that one does need sweetened. Mmmmm Enjoy.
I have the apple and blueberry one and the almond and honey one they are both really nice. dont know the points if its made with skimmed milk or water as i use semi skimmed and that works out at either 3.5 or 4 points, cant remember which is which though!