Yes yes yes OP. I first did SW 19 years ago, when I was 17 (found my old book recently and wondered WTF I was doing there at 5ft 7" and 10st 4....I lost a stone to get to my target of 9st 4 
).
Anyway, have been on/off it over the years. Tbh I've never been particularly big, just over into the unhealthy bmi range and so go back to lose the stone I keep finding.
I've recently, in the past few days, cut RIGHT back on sugar, and am feeling good. I'm not the sort of person to have a 5 syn Freddo and stop there. I would want more and more. But if I avoid obvious sugar completely, maybe I'd be more in control? So joined a thread (Will link in a mo) and find it really helpful. We're doing low-sugar, and not avoiding foods which are naturally high in fat. So full-fat Greek yoghurt, nuts, seeds and avocado are all on the menu. I find these foods so much more satisfying/satieting. When I was on SW last year I'd use my syns for full fat plain yoghurt and real sugar (I have half a teaspoon in my tea) as try to avoid sweeteners as much as possible.
Tbh I don't agree that filling up on Pepsi Max, vile Muller Lights and processed shit like Mug Shots is healthy at all. I would far rather eat PROPER food, but train myself to eat less of it.
Oh, also agree that SW only properly works the first time you do it.