I just tried my new bike on a trainer for the first time. It has 2007 Ultegra and an Ultegra SL crankset (which might be '08? I bought a 2007 bike but had them swap out the cranks). The shifting is amazingly gorgeous. So fast and accurate and very light touch. I had 2004 Ultegra on my other bike and shifting to the big ring required a herculean shove, and, while accurate, was a little sluggish... This is so different. Highly recommended!!!