I like having the latest greatest. My wallet says upgrade every couple years unless a good deal comes up.
I have yet to restring anything i owned. Crossbow nor compound. I like Mathews and will admit you are certainly paying for a name.
I shot a Ravin crossbow and was instantly hooked. Bought the R9 and sold that a year or so later and got an R10 .
I will not be getting an R26 or whatever they are up to anytime soon. They are compact , shoot well , easy to cock .