Both are good guns, but as already mentioned, very different.
Cat is nice and simple, I kept one around just as a loaner for quite a while.
Plays nicely on CO2.
The fox is definately akin to a mag, has a nice solid, reliable feel.
I always run mine on air only, and I THINK that may be a requirement.
Strive for that moment when you're only a slice of pizza and a hooker away from paradise.