[Shoujo]

Early -
1) DUC
- Cheap to upgrade
- Nice dmg/shot/kt for the early game
2) Ionic Disperser -
- Cheap to upgrade
- Useful pre-requisite - Propulsion IV
- Usable in the late game
- Decent d/s/k
- Can really punish players that rely heavily on armor for defense, and fail to use supply storage.
- Capable of slowing down an enemy fleet, possibly forcing the fleet to turn around and resupply.

Mid -
1) PPB
- Cheap to research
- Useful pre-req
- Great d/s/k
2) Shield Depleters
- Cheap to research
- Useful pre-reqs
- Great d/s/k vs shields
- Nice range
- Useful in the late game when ships rely heavily on shields for defense.
- Works well with ionic dispersers

Late -
1) APB
- Great range
- Great d/s/k
2) Null-space
- Great for ripping through heavily defended ships
- Useful pre-reqs

Overall -
1) Shield Depleters
2) APB