Hardeners to use:
Guristas - Kin/Therm
Serpentis - Therm/Kin
Blood Raider - Therm/EM
Sansha's Nation - EM/Therm
Angel Cartel - Kin/Exp/Therm

Damage to use:
Guristas (Caldari) -> Kin/Therm
Angel (Min) -> Exp
Blood (Amarr) - EM/Therm
Sansha (Amarr) - EM/Therm
Serpentis (Gal) - Kin/Therm
Khanid (Amarr) - EM/Therm
Mercenary - Therm
Corpum - EM/Therm

Smallest to Largest Site:
Hideaway Burrow Refuge Den Yard Rally Point Port Hub Haven Sanctum

Easiest to Hardest Site:
Hidden Forsaken Forlorn

Easiest to Hardest Drone Sites:
Cluster Collection Assembly Gathering Surveillance Menagerie Herd Squad Patrol Horde

Difficulty Data Site Relic Site
Very Easy Info Shard Debris
Easy Com Tower Rubble
Medium Mainframe Remains
Hard Database Ruins