AP Susan or Stack Susan(Nasus)

Stack Susan, no questions asked. Also I can call the enemy team stacks and my team nonstacks in /all chat ^-^ (25 minutes in) : I want the ninja stack. : Oh shit! An enemy has been slain! : Thanks for help stacking nonstack! : np

depends on map, aram or TT go AP susan, on AR go stacks susan; on a tiny map, they just cant escape your E aoe damage, plus your slow helps in teamfight