Getaway was my first pin, and it's a fun game, but it is more like worth half the price of a modern used Stern Pro. The Stern will be more fun, for longer, IMO. Just more more to do, superior rules, and better gameplay. If the money is anywhere near close, the Stern is a better pick in a one pin home. If you can afford the Stern, I'd get it.
Either way though, unless you way overpay, If you decide to go the other way you can easily sell whichever pin you end up with, and get the other with little to no money lost...