A new runner is at first more expensive (especially since you have even cable and lamps einrechnen at a complete upgrade), but in the end really is the more reliable and much more comfortable choice. I have no problems with moisture, abrasion or constant tinkering and Nachmontieren, and above all, no battery or battery power - one push of a button is enough and my light is lit after the first few steps (but which may also be related to the low-consumption LEDs that I use) ,
Super reliable, with a bit of skill easy to assemble and rates and five star definitely worth it.
