I've never used step-in's and at this stage i guess i probably never will, but the K2's and the Flow's seem to be pretty bulky and the K2's seem to weigh a ton. I have also seen the metal wires on the K2's becoming unraveled on several pairs. Burton seems to me to have always had the best product on the mkt purely because they can afford the higher R&D costs and can experiment with new technologies etc. Not to mention it's super easy to pick up burton parts anywhere and the main components will be repeated on the design for multiple seasons.... if i wanted a pure step-in i would probabl