Right. I've spent the last hour or so comparing nutritional values of LT, soy protein isolate and slim fast, and I've reached one conclusion, no more £30 a week for me! I think that you get quite comparable amounts with a mixture of SF and SPI, so when I finish my lot of shakes, I'll continue with them instead, I'll let you know how it goes. Plus, ingredients are rather similar once you add the soy protein to the slim fast, at least that's what I think. Any thoughts??