I keep my ULC days VERY ULC. I mean like around 5-10. But I do go as high as 20 on rare occasions. I have always followed the Atkins '72 induction-style diet for such a long time that I am used to eating very very low carb. I consider myself in stage 2 of the A'72 plan when I do my LC stints now. My carbs mainly come from eggs, cream, cheeses, spinach, the rare veggie, sausages, cottage cheese and my own home-made cream yogurt now. I have made an occasional flax MIM now and then, too. And that's about the extent of it. But that is just ME. If you can handle up to 30 carbs a day and still reach ketosis then power to you!