I do all 3 plans, I didn't have too much weight to loose when I started, but I lost most of my weight at least the first stone doing ee, I started doing red and green because I hit a wall and wasn't loosing, doing red and green didn't help me loose to be honest, I randomly started loosing again one week. However, I still do red and green somedays because I like having the extra healthy extra's. Plus if I'm having a meat free tea or something which I don't fancy potatoes rice or pasta with then I'll have either a red or green day as I don't see the point of doing ee if my main meal is green or red.
All of the plans work, I just think some are suited more to other peoples tastes and lifestyles