Keep it until it stops working , the Lynx is a great system, especially if you're the only one using it, there were some issues with overlapping frequencies with multiple drivers using the Lynx side by side... the fix was to buy a new Lynx that didn't have any overlap on the spread spectrum... that was the only reason folks stopping using them and it was discontinued. If you're the only driver on the stand with Lynx then you won't have any issues.

Over time, the potentiometers will wear out as well as the jog wheel, but until they wear out, it will be a great system!