Just wait until it fails like mine did! The failure highlighted what I now see as a significant weakness of the Kraken. For me, it became a single point of failure. It powered my XP4, two Wave Engines, two return pumps, and multiple 12V and 24V components. When the Kraken failed, it took hours, essentially my entire weekend, to get my system back online. I was digging out my old power bricks. That kind of vulnerability is something I can’t ignore moving forward. Even if I decided to stay with HYDROS, I probably wouldn't use the Kraken for anything critical.
I've also ran both, and I much prefer Apex. HYDROS has certainly not been more reliable for me. I will say the Apex has a much steeper learning curve though, but it is also much more customizable.