That 8X multiplier upgrade near the end was just amazing, and left me spoiled for choice. Do I go for nearly infinite ammo? Ridiculous Damage? Wait.. No. You can apply it to your combat drone count?
BWA-HA-HA-HA-HA-HA THEY'RE GOING TO RUE THE DAY!
That was honestly the _best_ feeling to get from an upgrade, especially when the results turned out as insane as they did.