I'm very happy with my 2013 XS most notable improvement over my 2007 XS are, keyless start, handbrake, day notice lights and cosmetic changes to exterior and dash board. Lost the electric seat adjustment but gained heated, which my wife and I use more. As I have to alter the steering wheel for, Pam on the rare occasions she drives the car I'd rather have heated. Headlights are not Xeon , but are better on later model.
One thing worth a mention is the seat height is a lot lower without electric adjustment, so I made up metal bars to bring the height up, the difference that made was amazing.