I have right now the sst5Lx and sst6LE . Both are Very comfortable . The sst5 LX are lighter and shorter in ankle height . I have a wide foot and need ankle support that was reason for getting the sst6 LE's . To me the sst6 LE's hand a bigger slide area and are little bit on the bulky side. Other then being a little bit bulky and heavier the the sst5 they are the best shoes i have had in long time . If u have the chance to buy a pair i would . Most people i know who have them prefer them over the sst8