Concealing the cables has nothing to do with the brakes. All of the lastest brake/shift levers now have concealed cables. Campy has had it since '91 or '92, SRAM since they first produced a road group and Shimano only this past year.

Campy's brake/shift levers are the lowest price, in most parts of the world, but most of the drivetrain SHOULD match (RD, cassette, and shifters at the minimum).