I got lucky and accidentally ordered the one with rubberized sensors.I’m also running a Red Sea for freshwater and aside from removing the skimmer, they’re pretty much setup for success. There’s not much to change. I also use Ecotech pumps and they’ve never failed me.
The only thing you’d want to swap out like you’re already planning to are those inkbird temp controllers if you got the ones with the stainless probes. They rust out eventually and put you in a bad position with the heater getting too got. They have a newer one with a rubber probe and those are supposedly built to last
Glad to hear about the pumps. Reading reviews online is always hit or miss, and I went from knowing nothing about return pumps to spending some big money on them with no real experience, so it's been stressful.