Someone on this thread recommended the Bayite heater controller. Standard US 115VAC outlets, rather than the proprietary ones that the main subject of this thread uses.
I ordered one. Came in last night. Swapped out my BRS rebranded Inkbird, using the plastic temp probe from the Inkbird, rather than the stainless one that came with the Bayite. Works fine. Plugged in the same 500w Finex TH heater tube I've been using for the last year or so.
A good night's sleep, and here's my Apex temp chart
Just wanted to say thanks