I love my base Genesis. And I really like the 17" wheels just fine. I think the OEM 18s are just too full of metal. I'd switch those out in a heartbeat for some other 18s. Obviously, to each their own. I like a slightly more conservative external look these days (and the lower tire replacement costs of 17s).
The base stereo actually isn't that bad, and I don't have to deal with the crazy electronics which I don't think any auto manufacturer does well. I'd much rather do
aftermarket and control the quality of the stereo myself, as I've done many times in the past. And a Garmin is a million times better and cheaper than any OEM nav system in my book which only gets used maybe 2% of the time that I'm actually in the car.
What I don't like is the cheap leather used in the seats and the too-glossy fake wood panel trim that reflects sun into your eyes. However, it is a decent look in the saddle-on-black interior.