What ever you get with the fewest bells and whistles, the least electronics. In general if you want the "most reliable" then buy a refurbished 1950s gas stove, Wedgewood or O'Keeffe & Merritt. Even though already 60 years old will still outlast anything built today.

second the recommendation on a 50's vintage range. Built like tanks, very simple design, not much to go wrong and pretty much nothing does, save perhaps the electric clock needing rebuilding every 20 years. As a bonus, everything still works when the power goes out. We had a Caloric that was pretty much pristine after 50 years of daily use. (That said, I just ordered the CC for the new kitchen--but I don't expect it to be as reliable.)