I've had both a limited and 2 SRT's. The SRT has a firmer ride and grippier seats. Drive one, and you'll learn how addicting that power is.

Plus sides to the SRT Vs Limited,

Better looking wheels (my opinion)
Gobs of power
Better handling
Grippier seats
exclusivity
If you're into modding it only takes a little bit of money to make it a real rocket ship.

Downside of the SRT Vs Limited,

Stiffer suspension (not unbearable, but noticeable)
Wheels are a ***** to clean
Lack of cool retractible spoiler