I just replaced my R540's with the 105's you linked to. They seem to be a nice pedal. I liked the 540's but I am a little uptight about having everything match and since my bike is all 105 anyway the pedals had to match. I used the 540's for over a year and they were easy to get used to and worked great. The cleat setup is a little awkward to walk with but I did not buy a bike to walk around any way. I like the float built in to the cleat and there is a zero float cleat available as well.