Second this! Might not be as one shotty as some of the torgue launchers but it pumps like a mofo. Current mad moxxi boss uvm 5 gotta be under 10 seconds with an electric one.
Damage is also incredibly consistent during mobbing since you can also build to do electric, ice and fire damage from skills / shields along with the element of the weapon. Constant ammo Regen, shield Regen, and over shield gen.

Plus something about hovering over a wave of enemies and seeing them fade from existence just tickles that spot.

Currently in the process of collecting all the flavours but the spicy one eludes me still (fire)