I have been using this bracket to hold my 60Cx to my handlebars and I have been extremely happy with the purchase.  I use my bike as my primary source of transportation and it has been easy to get around thanks to the street maps that I loaded onto the GPS.  As other reviewers have noted, you definitely want to also tie the GPS to your handlebars.  I use the wrist strap that came with the GPS.  My bike fell over one day and the GPS popped right out of the bracket and was left dangling above the ground.  If it had not been tied, it easily would have impacted the ground.