I just finished reading the print version of the June 2009 Motor Trend article comparing the Mustang vs Camaro vs Challenger.
Very interesting, even though the Camaro was considered best by a hair over the Mustang.
The Mustang had the Track Pak installed and was the best overall on handling in spite of the solid rear axle.
Here is the link to the web article
http://www.motortrend.com/roadtests/..._gt/index.html