The 7400 DA shifters also work with 7700 series rear derailleur. I have that setup on my Colnago and it shifts the best of any bike I own.
Originally Posted by
wrk101
From an aesthetics standpoint, I have standardized on either the 6400 (tricolor) or 7400 (Dura Ace) eight speed STI. The Dura Ace requires a DA 7400 RD, which is a bit of a PITA.