Is the Redy Temp Hot Water Recirculation System worth the additional cost? It is expensive.
Is its performance worth the cost? I am familiar with the Grundfos and Laing systems. However, they have only a timer which means the pump will run when not needed. However, these systems are less expensive. I have a dedicated return line (A gravity/buoyancy system which has quit operating properly).
I use the d'mand circulation pump. I have one of their units in my own home with a button on the furthest fixture and a remote control for the next furthest.
It has been working reliably for about four years now.
I have found their customer service good as well.
For more information:
Read "Do hot water recirculation systems work? What kind would you recommend?" a Q&A answered by Kevin Burrell.