I agree that both shift cable sets are about the same and interchangeable cables and housings. The Shimano cables are 1.2 mm in dia and the Jagwire are 1.1 but I've used Shimano cables in Jagwire housing and vice versa and no issues. The brake housings are definitely better from Jagwire as they have a different construction that makes them less compressible and give a firmer, easier to modulate feel when braking.