The Zamp connectors are a great marketing ploy, but that's about it. I repurposed the connector for my air compressor and for anything else I might want an outside 12V tap.
I had a decent solar setup on our Four Winds, (https://pbase.com/brucemac/2014solarpanels
) but haven't yet gone to the effort of installing solar on the Sunseeker. It's rare that we set for more than a day, currently. After retirement in a few years, that may change.
I like Morningstar controllers - we had the Tristar 45A PWM and was pleased with it. https://www.morningstarcorp.com/products/tristar/
For maximum efficiency, you could use the MPPT controllers.
Good luck, and be sure to post your install details, should you decide to install a permanent solar setup.