I have a 2011 Shelby, and a 2011 Camaro SS, both are wonderful rides.
Shelby is fun to drive, and a real monster when you push it. I have the performance package with the 3.73 gears and it's easy to break the rear end loose if you aren't careful.
Camaro is also very fast and lots of fun to drive. It's a little easier to control under hard acceleration.
In a straight race extra 124hp Shelby makes the difference. They are a great garage pair if you love muscle cars.
I looked at the 392 Hemi several times, and always wanted a Hemi......but the Dodge names is tough to overcome!