I've got an 07 with 65k on the clock. I've only had it a few months, but so far so good. Getting 26mpg, mostly hwy, but also mostly at 80mph (the main reason I got it was because my old Charger RT struggled to get 19mpg).
No problems, mine is stock. Lots have been modded-be wary. The car is already fast, but some folks can't help but tinker with them. Significant power increases require an updated fuel pump (you can buy a kit that updates the internals), or the engine runs lean and goes "boom". If it's been modded, make sure they did it right.
The handling is superb, it's really really fast, and it doesn't beat you up too bad. It will be noisier than most cars, and with all that power through the front wheels only, torque steer is of biblical proportions on bumpy roads. I love mine!