I have 3 road bikes and a cyclo-cross bike. The road bikes have 15 yr old 10sp Dura Ace, 10 sp SRAM Red, 11 sp 105 and the cross bike has 11 sp 105. The Dura Ace is amazing in that it is still so good. The SRAM is very tactile and shifts like a manual car as opposed to an automatic. The road 105 11 sp is very good and a great bargain. And the cross bike 105 is truly amazing. By far the smoothest and most quiet of the bunch. I like each one for different reasons. Just my experience.