I've always been concerned with the additional gunk they put into low fat and diet products to redress the texture issues once they remove fat - usually adding gums and starches to plump them out and thicken them again.
What I'm currently doing on my version of LCHF is buy big tubs of full fat Greek style yogurt (Aldi - 69p for 500g - at least 5 or 6 servings) and add my own flavourings. The yogurt itself is thick and creamy and filling. For breakfast I have it with my own mixture of seeds - sunflower, pine nuts, pumpkin etc.
For a fruity dessert version, I keep various bags of frozen berries (just got some gorgeous frozen blueberries in Tesco, I have these with raspberries) and take out whatever I want and either zizz them in my small food processor whilst still frozen so that they end up in tiny pieces rather than mushed - or just crush them with the back of a spoon. Add a good dollop to the plain yogurt and it's much, much tastier than a bought fruit yogurt and they only have 2 or three ingredients and no unwanted gunk.
A good size fruity portion done this way is just under 8g carbs and I bet it is a bigger portion and more filling than the carton at 10g - a lot cheaper too. To make it even more decadent as a dessert, I fold in a spoonful of whipped cream too.