In all honesty, the whole generation of hidden-cabled groups is pretty ordinary in its shifting performance. Shimano themselves declared that it would be, which is why they held off introducing it for so long before finally succumbing to "market pressure", all the while maintaining that the previous generation actually works better.
Ok noted. I'll hold onto my 7800 shifters for while yet then.
Why is it then since Campag from its first iteration of ergo had the shifting down pat? My '94 8 speed Chorus while a bit agricultural in feel and took a long time to bed in were reasonable shifters IIRC. (They had some extra features that Shimano lacked that enhanced their appeal to me at the time.)
Is their some patent issue with Shimano in not being able to mimic the easier shifting of Campag? I've never heard of anyone that has complained about the shifting of Campag due to the cable routing under the bar tape. As an aside I always preferred from at least an aesthetic viewpoint the hidden cables of Campag.