I think a lot of choices like this can come down to what you are used to. When I made the change to brifters the bike I bought was a Bianchi with Campy Veloce 8 spd. I was inclined to this purchase because I had a Bianchi frame I liked and my down tube shifter and transmission was Campy. Even though the Veloce was the bottom of the line after initial tweaking it was rock solid for 5,000 miles or more before my first rebuild. I liked that I could hold the thumb tab down or the lever in and move several cogs in a jump in hilly terrain. I liked the clean look of concealed brake cables up front.

The down side is that relatively few bike shops fully support Campy and early on innovative wheelsets were Shimano only.

I stayed with Campy on my current bike because the shifting is so instinctual to me now. I also find the new the new hood shape to be very comfortable.