The powerful Vigilance and the immortal Barbas are remodelled to appear as if Vigilance truly followed you to Oblivion and back and Barbas was the hound of a daedric prince. I was personally disappointed at the appearance of Barbas and thought it didn't represent a powerful hound as it should. There are two main files that are compatible with one another, one to remodel Vigilance and the other for Barbas.
Other mods that edit Barbas' follow distance are compatable, I have added the links. Pick your favourite.
Back of Barbas: http:skyrim.nexusmods.com/mods/2686
Less Annoying Barbas: http:skyrim.nexusmods.com/mods/22703

Vigilance

Stats:
Speed=115
Level min of 20 and max 100
Leveled with player x2
10 Base Health
20 Base Stamina
Is essential
Class=Animal Predator
Regen Health in Combat


Skill(min)(Leveled with player):
45 One-handed
15 Two-handed
45 Archery
61 Block
15 Smithing
15 Heavy armour
15 Light armour
15 Pickpocket
15 Lockpicking
96 Sneak
15 Alteration
15 Speech
15 illusion
15 Alteration
15 Conjuration
15 Enchanting
15 Restoration
15 Destruction

AI Data:
Unaggressive
Happy
Foolhardy
Helps Friends and Allies
50 Energy

Barbas

Stats:
Speed=100
Level min of 15 and max 100
Leveled with player x1
10 Base Health
20 Base Stamina
Is invunerable
Class=CombatWarrior1H

Skill(min)(Leveled with player):
46 One-handed
25 Two-handed
35 Archery
35 Block
15 Smithing
46 Heavy armour
15 Light armour
15 Pickpocket
15 Lockpicking
50 Sneak
15 Alteration
15 Speech
15 illusion
15 Alteration
15 Conjuration
15 Enchanting
15 Restoration
15 Destruction

AI Data:
Unaggressive
Happy
Foolhardy
Helps Friends and Allies
50 Energy