I added leather seats aftermarket, and I love them. I've heard some people say that they get too hot in the summer, but I didn't find that to be the case where I live in Central New Jersey. I don't have the GPS, either built-in or as an add-on. I'm rarely traveling anywhere I haven't been before, and on those rare occasions maps from Mapquest or Google are fine for me. But I could see it being very useful if I had a job in sales where I'd need to be visiting customers frequently.