In my opinion, it depends on how much you shoot and how precise you want to be. I shoot nine 3D shoots a year and thousands of arrows per year. You couldn't pay me to have Cabelas put a string on my bow. Those are average people not bow technicians. I've also ran 60X strings before and they were great for the first 1,000 shots. After that, the string stretched like crazy and made a significant POI change.
I would suggest Gas strings, installed by a quality archery shop like Lucky Shot.