Q: How do stainless lines compare to just changing brake pads?

They solve different problems. Performance pads raise friction and stopping power; stainless lines sharpen how the pedal feels and responds by removing hose flex. Many owners do both, since a grippier pad through a firmer line gives you both more stopping force and better control over it. Owners often add them alongside a Large Sweep rotor and pad upgrade; if your pedal already feels soft under hard use, the lines target that specific complaint directly.