Personally, I would use the WXM. WXM will allow you to control both the Radions & Vortech pumps which really eliminates the need and value of the Reeflink. Having a single interface for all aquarium related stuff is very convenient and makes it simple include those devices in your Apex programming Whether it's feed timers for Vortechs or turning your lights on after hours, the single interface & Apex app if you have an iPhone is a great convenience.