My running shoe history has been
Nike air max for several years then moved onto the nike shox b/c I loved the theory behind it. What I found was the shox totally changed my whole stride and not for the better. I could barely run in any other type of shoe with a low heal as my muscles were just not used to it. SO I ditched them and started wearing ryka’s then got intrigued by frees. I read tons about them and decided to give them a try. I did exactly what the little booklet thingy says and did the two week break in period for my feet. since then I have exclusively run in frees. I am on my 4th pair that I rotate through and I absolutely love them. Some people will tell you they are only good for short runs which is retarded and makes no sense. I have done several marathons as well as IMFL in my frees and will not go back. If you have a Nike outlet close to you, they are often their and very cheap. I have not paid over 20 bucks for any of my 4 pairs!
What I love most about them is that the more you use the m the better they get. I think I will have to wear a whole through the upper before I ditch a pair.
hope that helps.