Originally Posted by
stapfam
10 speed will give you better availability for spares in years to come- but I think 9 will be available for some a long time.
This is why I decided to "standardize on Ultegra for both of my builds - just the lower cost (PBK had an incredible deal), popularity of parts and quality.
I had a great deal of help on both Bianchi and Merlin builds...here are the threads:
http://www.bikeforums.net/showthread...=1#post4074333
http://www.bikeforums.net/showthread.php?t=305019