I think Lyle McDonald has a lot of very interesting things to say and by using his diets you learn a lot about how your body reacts to different macros. I also did pure Keto for 8 weeks, I did not get sick of it I just missed my steel cut oats. I think Mastover hit the nail on the head when he recommended keto for those with higher bodyfat and some lifting experience. One thing that is great about it is that it seems to help reset any overfeeding habits. By flooding your system with rich fat laden foods for a period of time it desensitizes you. It takes away cravings, well it did for me anyways. Staggering carbs at the end of the day is the main way to get good results. I go from 50g to 200g a day at the moment whilst still cutting. There is no better teacher than experience.