Originally Posted by
operator
Jagwire shift cable and housing is bottom of the barrel.
What you get with 'premium' cable kits is much reduced friction through the lines. You can feel this when braking or shifting. It's noticeably less easier to do with kits like Yokozuna. If you're running 10 speed shimano or sram, the premium stuff will make it shift even better than it does with the 'stock' dura ace or ride on kits.
Once again you unfairly "tar&feather" a whole family with one brush stroke. Jagwire makes a wide variety of quality levels from the basic bulk pack shop replacement stock for simple and cheap repairs to high end products. The higher end Jagwire "compresionless" kevlar wrapped brake housing I've used is at least as good as any other premium brand and model of housing.