Definietly splat roller.I alwayd get 10+ kills.Also i dont understand why aerospray is over hyped.Its freaking terrible compared to the first game's MG.My main was that but now its not that good.
I've found to love the Aerospray MG. The amount of raw splat that thing does makes up for its woeful accuracy at any rage farther than the tip of my tentacle.
I'm N-Zap '85 all day! combined with gear that reduces paint used by main weapon, this thing will spray all day. Plus the ink armor paired with it will lead to near invincibility at medium range versus 1 or 2 people