[jurassicfoxy]

I can assure you that many super shoes will make you noticeably faster. Try them on in the store, you'll know right away. That being said, some of them (Nike's especially) are really hard to run in. Almost zero heel support, and so you do have to be quite fast to make some of them work.

I have run in Endorphin Pro 3's and they are super super stable. I've work them for very slow ultras as well as fast workouts: excellent shoes all around.