What is the best armour on fallout 3

In the normal Fallout 3 without any DLC or add-ons its the T-51 Power Prmor found in Fort Constantine, despite the fact that due to it's rusted condition it can't be repaired except by NPC characters. This armor can be obtained by starting a mission called "You gotta shoot em' in the head" which is gained from a Ghoul named Mr. Crowly in the Underworld.

With the Operation Anchorage DLC it's the Winterized T-51 Power Armor you get once you finish the DLC. Bethesda Studio's accidentally gave this armor over one million health, thus making it virtually indestructible. They never fixed the armor's stats, even with patches.