How do u lace them?These are the two boots i run primarily. I ran the summits for 2 years and ran the thors all last year. While both are great boots and dont require any break in I have to admit that I prefer the thor. The thor's when laced correctly have less heel slip and I prefer the stiffer flex. I got leaking from both of them after about 30 miles. Its going to be very individualistic because what I find appealing in a boot you may not. The one thing I will say is that I liked the summits better until I nailed down how I liked the thors laced.