I do red and green for reasons ; I like the 4 HEX, I believe when doing EE the 1/3 superfree should be 1/3 of your plate (as opposed to the whole day) and depending on what I want to have it's just not convenient! Also I've always done red and green and EE seems too good to be true I guess I'm scared of doing it and not losing! I guess we all do what works for us!
Some also said that carbing made them small losses - I found that too mainly when I ate tons of pasta/couscous or wheat based carbs! I found that if I swap pasta for potatoes/rice/polenta (ie - carb that isn't wheat based) I still had good losses. I always found wheat products either gave me the windypops (sorry for TMI) and bloated me out.