Some Interesting perspectives here. More negative towards IHG than I expected and the positive ones are mostly lukewarm.
As with most things it depends on your specific situation (where you travel, how often, how you use your points, etc.).
IHG has been pretty good to me. Since it is my current secondary program maybe that will change when it becomes my primary.
Oh, in my list I forgot to mention the BOGO with Ambassador. I like things that pay for themselves.