I have a decently large foot, 12.5 in NB trainers, usually higher in spikes. I currently wear a size 13 in my Nike Zoom Kennedy XC spikes and want to know how the sizing goes with the eldorets and the milers. The last thing I want to do is order a pair of $100 spikes and realize they are too small or too large. Also, I run 4 by 4, 4 by 8, 16, and 32. My premier/post season event is the 3200. Which spike would you gurus recommend? Any advice is appreciated.