I am quite careful about not wasting money, but do so in a somewhat different way than most in supermarkets.

I'm quite flexible in what I eat, so I mainly look for good deals on high quality foods.

I also care about good food, which is why I do look for the premium ranges in the supermarkets (and why I'm pleased to find there is a Waitrose within walking distance of my new employer). The premium ranges are usually much more expensive than the basic ranges, but buying good ingredients and cooking them is still much cheaper than eating out, or even getting ready-meals.