When I bought my Serotta my fitter was pushing me toward Shimano specifically the R 700. To me the hoods felt fat and clunky compared to the slimness of my Campy hoods. I also did not like the ergonomics of the shifters, they seemed harder for me to brake from the hoods.
I agonized over which way I should go and decided to stay with what worked and felt to most comfortable to me. I stayed with Campy and in the long run I'm glad I did.
Years ago I had Shimano 105's on my bike. To shift I had to slide my hand sideways off the hoods to have enough reach to get the gears to engage. With the thumb shifters on Campy I do not have any problems.



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