Overview: Highest DT, offering superior protection. Requires Power Armor Training (usually from the Brotherhood of Steel) to wear. Examples: T-45d Power Armor, T-51b Power Armor, 'Remnants Power Armor' (unique).
Benefits: Extremely high damage threshold, excellent protection against all damage types. Some power armors offer Strength bonuses.
Drawbacks: Very heavy, significant movement penalty, requires Power Armor Training. Can be difficult to repair without high Repair skill or specific items.