Different law enforcement, and military outfits may have semi (USMC) or pump based upon a ton of factors.
What's best for one situation may not be best universally.
If you prefer a pump, great. Know their limitations and how to clear them if you jam it up, they aren't jam proof and when they jam they can jam real good. Don't have a false confidence that they won't/can't jam nor that modern semis are jam-o-matics.