French Press requires a consistently coarse grind, but shouldn’t cost you more than about $100 or so for something that will work nicely for both French Press and Drip.
Medium-Coarse Coffee Grind used in specialty devices like the Cafe Solo and Chemex Brewers.
Medium-Fine Coffee Grind used for Pourover Cones, Vacuum Pots, and Siphon Brewers.
Espresso will probably be the most crucial, since Espresso is a microcosm of coffee, and it is under pressure, so the smallest change in grind can result in a noticeable outcome in the cup.