I picked up a couple brand new Jandy Apure35plg systems as shelf-pulls. I was originally planning sell one to help offset the cost of the other, but now I am wondering if it would be beneficial to just keep it and install one on the pool and the other on the spa. It seems it would help on those days it needs a boost. I only paid $600 for both, so it wouldn't hurt me to keep both. ALSO, is it better to run these one 120v or 240v?