I can’t comment on the unreleased Maven obviously, and I have not tried Trident.
However I am currently running both Apex and
Hydros controllers. Apex is on my 10 year old tank I am about to tear down,
Hydros on the new tank I just set up a few months ago. I wanted to try a different controller so it seemed like a good time. Also wanted to try some of the nifty
Hydros hardware like leak detector ropes etc.
Either will be fine for any reasonable controller need in my opinion. I am sure there are rare edge use cases where one is better than the other. Both have certain nuances to their programming that you have to sort out, but overall I felt like the learning curve on
Hydros was easier especially if you would rather work with sliders and drop down menus rather than typing in commands. I like the aesthetic of the
Hydros hardware better, as well as the physical connectors (water resistance and color coding) and some of the little direct drive pumps. I missed the little LCD display panel with buttons on my Apex which
Hydros does not have, just for easy physical mode buttons (feed button etc) without having to grab my phone and open an app. I bought a third party button box for my
Hydros though which replicates the same function for me but even easier as it is just a separate button for each mode.
If I was starting again from scratch I would choose
Hydros, but realistically either system can do anything I will ever want, which is mostly control, monitoring, and notification when something is out of whack.