I've used SPD's for years but elected to install the Keo 2 Max's on my new carbon bike. I can't believe how difficult it is to break them loose.
They're factory adjusted to the lowest pressure setting but I have to do a major high torque heal twist (to the outside) to get them to release. I have the greys on my Sidi's so I put red's on my other shoes but the red's are even harder to release. Defect or perhaps a break in period?