That's a very personal decision. Grand-dad loved Browning (God bless JMBrowning) autoloaders. I preferred pump shotguns. My choice. My dove and duck for dinner.
I'll never disparage someone else's personal choice.
Realistically, they both shoot faster than I can be accurate.
/johnny
http://commons.m.wikimedia.org/wiki/File:Benelli_m4_2.jpg
This is the Marines ..according to Wikipedia shotgun of choice.