Have done Atkins in the past and it is good when followed properly (ie no just eating bacon). Have since followed the CSIRO Total Wellbeing Diet and it is quite good. Especially if you find increasing your protein and lowering carbs helps. I found it to be a nice middle ground, I try to follow some of it principles now and intend to be better with it. It is based on portions, so 3 dairy, 3 fat, 3 protein, high fibre, fruit etc. There is some room for treats, like a wine or two once a week, or chocolate instead. Certainly a way of eating that it doable for the longhaul.