As my username suggests, I'm 100% biased with my answer that HYDROS is the way to go!
We are working hard to create a collective of controllers to automate any and all portions of your aquarium by creating a modular system, that is always expanding at the rate of the user. You can start with any of the HYDROS Controls and add on later with more, to get more ports, to add more sensors, to do more jobs!
EVERYTHING is color coded, you know what you are about to setup. Everything is labeled appropriately to make the installation experience as smooth as possible. The HYDROS user interface is similar to setting up a smartphone, with all dropdown menus and families of presets to do things like kalkwasser, ozone, heaters, lights, and so much more WITHOUT ANY CODING!
Expand your HYDROS Collective at your rate, as there are no frets in getting locked into a system by starting with a smaller HYDROS Control; you can always use another HYDROS to expand your "Collective"...what we call multiple HDYROS Controls working together in a neural net of safety. Multiple brains provide loads of redundancy. Also, because all HYDROS Controls have Command Bus Ports to transfer data between devices, NO HYDROS CONTROL WILL GO OBSOLETE, it will always have that connection to be part of the collective.
We build these ourselves, design, engineer, and do the software fully in house at our HQ in Slidell, Louisiana. We build them to last in a rough environment, with an IP65 splash-proof rating on most of our Controls (Not the Launch/XP8, because of the 120v outlets). We've seen other controllers go bad and take down a system; we didn't want that and we are doing everything in our power to make a dominant controller.
You can ask anyone at HYDROS and we will tell you that Customer Service and R&D are the #1 priorities. We've starting to reveal our cards recently with the announcement of the MAVEN, SOLE, XHO Light and the recent app update that polished it up even more! Always innovating, always available, please always feel free to reach out to our phone line, or support portal, or email, or facebook, or instagram for any questions you may have!