I'm not sure I can speak to what's the best, but I really like my Beretta AL391 Urika, I've had it for about ten years.
It's a peach and eats anything I feed it, and doesn't seem to care about the weather or condition.
It just shoots, and tends to make flying things hit the ground quickly.
I also have a factory rifled barrel for it, and as a rifle it's slick, handy, and accurate.

Cheers
Tinker