Emily, I thought you could appreciate this - my BF just got me titanium Zeros (Speedplay) for my birthday, upgrading from my stainless, and because I was switching them out between my bikes. However, I've been afraid to put them on because I don't want to start the breaking in process all over again. After about 4,000 miles, they are so easy to clip into - barely think about it and I'm in. So, I'm still riding my old ones!