Dispel Magic: buy against vindicta, QE gets disabled when vindicta stakes you now, so this is a good friend
Spirit Resilience: good if you take lots of heavy spirit damage
Bullet Resilience: good if a lot of/fed gun heroes, works well with return fire
Silence Wave: very strong against heroes like sinclair, wraith etc who can escape you or just good in general to engage/stop someone
Return Fire: fuck you haze (return fire's damages it NOT impacted by YOUR bullet resists, so get more)
Suppressor: -65% fire rate with t2 stomp, can skip if no high fire-rate heroes (haze, infernus, vyper, gun ivy, etc)
Counterspell: your quant isnt enough? saving your teammates gets you killed? get this. use quant for teammates, this for yourself.
Decay: mostly a damage farm but is really good for 1v1s against tanks, not good against victor's 3 absolute fucking bullshit debuff removers what the fuck valve
Toxic Bullets: between this and decay, id pick decay for more consistancy but if fighitng victor or enemies with many debuff removers, take this instead
Stamina Mastery: i keep this here for insta-access for testing purposes. if you want it, sure buy it.
Juggernaut: good anti gun, can skip