I have a very old Delonghi (sp?) toaster oven, that has nothing "smart" in its electronics, and the same with that Farberware countertop convection oven (from 1977), so hopefully, they will live even longer than I expected! I have looked at some replacement options, figuring that it would need done, but, KOW, it hasn't happened. I do remember considering Toshiba, for a toaster oven, only because they were cheap, and nothing "smart" in them, which is always what dies. But to replace the larger one, I would look at the size, though in your case, you are using it for both a toaster and oven, which would be difficult to balance the size for. I wouldn't worry about the proofing - with all the bread I make, I don't think about the temperature much - only want the higher temps for certain sourdoughs. Most of the time I rise at room temp, for longer.