My Shimano brakes (the 105 I got to replace the old RSX brakes) let a plastic ferrule on the end of the cable housing slip in with no problem. Come to think of it my Rival on my other bike have the same set up. Neither has the internal cable routing, though. And as you said the calipers have an adjuster on them already. I guess you should just evaluate what is available either through reading online or in magazines or talk with other riders about their brakesets and how they perform for them. It will come down to how much money you want to/can spend on the brakes.