Best pH Monitor/Controller?

[Constrictor6090]

Looking for recommendations on the best pH controller and monitor out there, specifically for a Vertex Calcium Reactor. Last pH Monitor I used roughly 4 years ago was a common green Milwaukee pH monitor. I was wondering if this is still the go-to per say? Curious to see what options are out there that I have not heard of. Not looking to buy an Apex for just pH, but cost is not really an issue to me.

 

[DEWreefing]

Apex 2016 is a great way to go I use it for my calcium reactor and my tank ph. I just bought a second ph probe and put it in the orp port. Great to have all this info while I'm at work.