Working with two different pool builders on a new IG pool. Both designs are similar in size about 30x 13, 3.5 to 6’ deep. Anyway one builder is designing it with a Jandy ePump 2.7. The other is using the VS PumpHP 2.7. We are going with automation. The first is using the Aqualink PDA. The other is using the Aqualink RS. I need to ask them why they are using one over the other but trying to see if anyone here can help me understand the main difference and does the automation being specified has a bearing on which pump they are using. Thanks