Luxury brands in general don't hold their value so well. Bad for new buyers, great when buying used.
The Hyundia Genesis, while a really nice, well built car, is the poster child for shitty resale value.
If you go with something German, there's a place in N Ridgeville called Ianelli. They service and sell (used) German cars, they have a good reputation and service is cheaper than going to a dealer. The A4 I bought was the personal car of someone that works there.