I've been wearing the Sketcher Shape-ups for about 4 months now, and I love them.  They're like walking on soft cushions.  I've also had problems with plantar fasciitis, and the cushioning and support are perfect.  Although they seem to slow my walking pace some, I feel like I'm working harder to get there, and I definitely feel the difference, especially in my calves and shins.  I also tend to pronate, and these shoes do make it easier to do so, but I figured that they were designed to make you work to achieve balance in an effort to strengthen core muscles.  It seems to work for me at least!  I'll definitely buy the shape-ups again.