Great. Thanks for that description! :) I've got just about all of Cathe's workouts (waiting patiently for the intensity series to come), I just wasn't quite sure what that was about.
I have Ryka Combo shoes and really like them a lot. I also have the XTR crosstrainers. The XTR's have a little more cushion than the Combos, but they are both great shoes, IMO.