2009 Mercedes-Benz E-Class E350 4dr Sedan (3.5L 6cyl 7A)
I traded my 08 E350 Sport for a 2009 E350 sport mainly to upgrade to the new, faster electronics and music. I found no major driving differences, however the HD radio, the NAV system, the Voice Command and the increased response speed for all technology functions is amazing. There is almost nothing you can't do with the voice command system. It even has a training module to improve the voice command's understanding of your input language. Smooth ride and handling are accomplished with the sport suspension. Since I had no problems with my 08, the 09 is just icing on the cake.
Improved Navigation, Improved Audio with HD Radio, Increased speed of the technology response, introduction of voice command for almost all functions including phone, radio, etc.
Leather should be standard in a 58000+ vehicle, however the standard vinyl is durable and easier to clean.