You might try the Toddy cold brew method. You take like a pound of beans, grind them up and soak in like a gallon of water that slow filters through a special filter they sell (reusable for 10 uses). Then you keep it in the fridge until you use it. It’s a more mellow, less acidic brew in general.
Same here. Simple design, comes to the exact temp I want and holds it there. Mine lasted about three years until I got it wet and the readout went out. Weirdly it still worked fine but I eventually replaced it.