Originally Posted by
fureshi
I've noticed the same as well. The Dura Ace 7400 system with SIS on my 80's Allez shifts faster than all of the modern groups (DA7900, Ultegra 6700, Sram Force/Red, Tiagra) that I've tried so far. I'm not sure if 7400 actually shifts faster but at the very least the shifts feel more direct. A pull or push on the lever and it's in the next gear without any fuss. I've been thinking of modernizing the group on my Allez to something with integrated shift/brake levers but the direct feel of the 7400 group is giving me pause about the "upgrade".
I wouldn't upgrade, there simply is no need, plus the expense of doing so is crazy. Don't forget to that the SIS system if more reliable and less hassle and far less expensive to repair.