I have been wondering if anyone out there has bought both the old editions of the new diet revolution (mines a year old, bright orange cover) and the new edition?

Is it worth splashing out on the new edition? Are there a lot of changes? Is it research, recipes or has the approached been tweaked? Will there be anything in the new version that I can not find on here or other low carb pages?

Im not a skinflint buy the way, just hate doing things twice!