Mr K, please cease from speaking, a srt8 is a completely different car then some base ass 300c that people (insert racist word here) out with 20inch ugly chrome rims. The rims that come with the srt8 package look fucking awesome.

Depends on what you want, the charger is obviously more aggresive looking, with the hood scoop and front end, while the 300c is a little more, well classy i suppose.

As far as performance goes neither of these things can turn for shit, they're both based on a old mercedes frame, straight line performance is nice though, get a diablo tuner to overcome the traction control problem (basically even with TC off its still 10% on to prevent drivetrain breakage). But the 300C is faster, quite a bit less weight on it. Neither have speed limiters and the 300c will do I beleive 174mph

edit: and I've driven a 300c SRT8 about 20 miles having some fun with it, been in a magnum srt8 which is just as nice, and ridden in a charger daytona r/t (not the srt8 but still higher power then the reg motor)

my choice honestly would be the magnum, you very rarely see those in srt8s riding around, and I love the styling.