The Vector is definitely a good machine, expensive to have worked on but overall fairly easy to service. If you can change an engine in a car, replacing motors and gearboxes in it is comparatively easy. Ours is nine years old with probably $6,000 in parts changed by me (All major components replaced once). There's no steel in it to rust, but if the used one doesn't come with stainless rails, do yourself a favor and get a set if you buy it.