I don't get how people can like the CE magnum and the H5 Magnum, then turn around and hate the Mangler, like they're all so similar in Viability.

The CE magnum IS THE CE MAGNUM, Nuff said.
The H5 Magnum is a well toned, well balanced tool of all round awesome that can do what you can push it to do.
The Mangler is a "PUSH IT TO THE PROJECTILE LIMIT" gun that you just have to avoid getting close to and avoid like 1 or 2 shots, then you've got them dead to rights.

Then again I ROCK with the mangler so I may be biased.