I love the NFS shape, fits me like a glove. I've used Prince for years, and kept replacing with the next available model (NFS, Excelerator, Viper, etc.) I went with the NFF - more of the same, but lighter. Problem is, they hurt my feet. I ended up having some weird pockets of fluid in my heel. Could be the shoes, most likely, so I ditched them, no problems since. I went with the Head Games mid (I favor the mids) and while I like them, I miss my Prince shoes. Is there a new model with the NFF shape out there or coming soon? If not, any other suggestions for comparable shoes? I know I can still get the ViperII but those are 20oz... Thanks.