I know a few people with campy 11 sp who like their 10 sp better for various reasons, the most of which is that they feel the 11 sp is much more finicky. They also don't like the fact that they have to replace parts after 1 season (like the chain, and is $$) I personally find any shimano >=105 to be just fine. I also think any Campy >= Chorus is fine, I'm not a big SRAM fan.