My favorite DLC has to be the BBQ Pack. It has so much good stuff. The Flamethrower is not really practical, but it is SUPER fun to use in my opinion. Also, the Steakout was one o my favorites back when Hoxton Breakout was the best mission to grind for XP on. The Steakout is a crazy good shotgun, although maybe not on Reinfield's tier. Also, the Piglet may honestly be my favorite gun in the game, it is a total killing machine on missions like Rats and Hoxton Breakout, and can wreck anyone in almost any situation. Also, the Poker is a great melee weapon for dodge. I bought BBQ the day it came out at full price, because flamethrowers look amazing. Oh and I almost forgot the Molotov, best throwable.
What is your favorite DLC, and WHY? WHY do you love it so much?
Easily has to be the HM2 crossover DLC. The Sociopath perk deck is insanely good at the moment, allowing you to stay in the fight infinitely if you kill a lot more like I tend to do. The Carpenter's Delight is pretty good, and the Jacket's Piece is a top tier SMG along with the Kross. Jacket himself is amazing, funny and well developed. The only downside here is a lack of temporal sense.