Ok...this all started bc I have a couple dosing pumps from BRS that needed a timer. I was looking around and just dont feel comfortable enough with the reliability of the current digital timers so thought about buying a used RKL for $70...it comes with the head unit, controller, PC4 and temp probe. Im not really looking to drop $220-500 for a controller right now so Im looking for your opinions if this would be a wise choice or should I just get 2 of the old school timers for the pumps? I will admit, I have very little knowledge of any controllers such as the RK or Apex and find it all a little confusing so any insight is appreciated....