I am interested in buying nike shoes, mainly either the breathe II's and III's or the vapor 3's. I have tried the original vapors and those were too narrow for me. I wear the barricade IV's right now and I don't know if they are broken in yet or not good because they are narrow, but my feet cramp a little. Is there any advice you guys can give when getting sizes and what not when it comes to those Nike shoes ?? TY in advance.