I used Bikila VFFs when I started running. I ditched them after 3 months and only used them sporadically after that. I eventually came to discover that they caused a lot of trigger points to occur around my ankle bones - and I have not worn them at all in about 6 months. I decided it was because they curved up on the sides, and they were not wide enough, and the toes were too long. So, I cut them up today to modify them to what I wanted and they now fit correctly and feel really good. I cut away the support from the sides, I cut of the support over the top of my foot and I cut the toes off. Some time soon I am going to take them out on the trails and see how they do. Yes, I just cut up an $80 pair of shoes.