How do the guns sound and feel?

I'm a big fan of satisfying gun play. Sure, exploding stuff with tech and biotics is fun, but nothing's quite the same as a shotgun that packs a real punch and where the game's sound and graphics let you feel that punch.

If you've played the game (and ideally used several different guns), how would you rate their sound and feel on a scale from 1 (tinny pea shooter) to 10 (Godwyn pattern bolter)? Are they a viable primary damage source or do they play second fiddle after combo explosions even for the soldier type character?

Thank you!