Focused mainly on the manual version.

Full Article here: http://cars.about.com/od/dodg1/gr/09challenger_rt.htm

Quote that sums up the review:
I said I'd take a six-cylinder Ford Mustang over a six-cylinder Challenger but for V8 power, I wouldn't think twice about passing up a Mustang GT in favor of a Challenger R/T. No question, the R/T manual is the jewel of the Challenger lineup. I want one!