Over the last 53 years of my life I feel I have been on every diet possible, but I haven't heard of them I must say. But The trouble with all the fad shakes, meal replacements is there fine whilst your on them and you do loose but once you go back to eating, even a healthy diet again you simply put it all back on again and end up heavier than you are now.
Why not give the Low Carb High Fat diet ago that everyone here advocates, I was skeptical at first but its working for me and its easy to achieve. You just reduce the amount of rice, pasta, potatoes, pastry, bread etc you have in your diet, and I mean reduce, I've basically halved mine, I've not had to give them up entirely and because of that I don't feel I'm giving up all my old comforts. Then use things like butter, cream and leave the fat on your bacon if you wish. I actually don't feel I'm being deprived of anything, sugar I have to avoid anyway now diabetes has seen to that, but otherwise its relatively easy and I never thought I'd say that about any diet. I've lost 20 lbs already in around 7-8 weeks and its still going down.
So give it ago. There's lots of info on this website about it.
Why waste money on shakes?
Good luck
Maggie