I had SPDs for 3 years and my toes and yes, sometimes feet!, would also go numb. I thought it was my shoes, but instead of investing in new ones, I just switched pedal systems altogether, because of IT Band issues with my knee. I have only had the Speedplays since the beginning of the year and it's early, so I haven't had many long rides in. Of what I've done, no numbness. But, I've just recently figured out that frequent lubing is needed to stay clipped in and my shoes are not nearly as easy to walk in! If my knee stays healthy, who cares?!!!

~Angie