I was excited for Trident but sending it in to Neptune every 18-24 months for routine service has me questioning it. Costing 150-200$ (or "under 100$" for the DIY kit) is a little absurd... and they'll tell us more about this "in a couple months."
They want us to invest 600$ on the unit and they can't even tell us definitively what the cost of routine servicing actually is!? :/
I really want an auto tester but I'm not sure what to get now....
Putting this in perspective, you would do yourself justice by having something to monitor at least dKH. The ideal situation is that it'll be easier to do yourself (if you're handy) and those that will just send it in will send it in. You have to really start to think about the mundane task of testing. Gives you time for other things to do with your tank, like really getting to understand things about your system you never thought were possible or knew about.
If you really want to have a stable system, run something that helps control a calcium reactor.