I'm currently running clipless Shimano 535s and loving it. I ran clips and straps for a few days to try it out and didn't like them. My foot didn't feel all that secure on the upstroke and I had a heck of a time trying to cinch the straps down while pedalling. Eggbeaters are $50 at Dan's Comp so I may be switching to those as I have heard many a good thing about'em. I may give clips a try again, perhaps on my next bike build and for a longer period of time.