I have the AutoPilot system (SC-36) on my pool/spa combo, but no experience with Aquarite. I have two major concerns with AutoPilot.

First, if you follow the AutoPilot suggestions regarding plumbing a pool/spa combo it's impossible to control the chlorine concentration in the pool separate from the chlorine concentration in the spa. I believe this is essential to good operation of a pool/spa and AutoPilot should address it. I was told that the Aquarite system can provide separate concentrations - check other threads in this forum for additional details.

Second, AutoPilot's technical support is lacking. I have left one phone message and two email messages within the last two weeks, and even though they claim to answer questions in a timely manor, none of my messages were answered, neither by email or phone. This suggests to me their tech support is either overwhelmed or nonexistance.