the big advantage to cliples from my perspective is gaining the 5 o clock to 7 o clock part of your spin---with clips and straps my foot would always pull out when i tried to scrape the bottom of my circle. Also, i find them easier to get out of--with straps, everyitme i got them tight enough i had trouble getting out and when i did get out i would have to retighten. The only drawback so far for the clipless is trainign yourself not to casually rotate your heel