What are the possible quest rewards from the civil war storyline?

The Rewards

The rewards are mostly entirely balanced. Almost all quest rewards are listed as leveled rewards, either in the form of gold, or as armor and weapons. When the reward is leveled, the game determines an appropriate reward based off your current level. Faction side does not appear to make a difference.

There are several quests, however, that do offer distinctly different rewards. Ultimately, you will be choosing between faction armor, player houses, and titles. The titles are unique to each side, but both sides share the same basic structure. While certain quests reward the ability to purchase player housing, both houses are available to both sides, regardless.

As confirmed be several sources, including on Reddit, Steam forums and on GameFAQs, the biggest difference between joining one faction or the other is mostly story-based. It is quite likely that Bethesda intended the faction choice to be made based off the story path the player was wishing to take, alone, and thus deliberately set both sides up to be fairly symmetrical.

The Imperial Legion

• Imperial Armor
• Player housing Hjerim in Windhelm

Imperial Titles

• Auxiliary
• Quaestor
• Praefect
• Tribune
• Legate

Quests

• Joining the Legion
• The Jagged Crown
• Message to Whiterun
• Battle for Whiterun
• Reunification of Skyrim
  • A False Front
  • The Battle for Fort Dunstad
  • Compelling Tribute
  • The Battle for Fort Greenwall
  • The Battle for Fort Sungard
  • Rescue from Fort Kastav
  • The Battle for Fort Snowhawk
  • The Battle for Fort Neugrad
  • The Battle for Fort Amol
  • The Battle for Windhelm

The Stormcloaks

• Stormcloak Armor
• Player housing Hjerim in Windhelm

Stormcloak Titles

• Unblooded
• Ice-Veins
• Bone-Breaker
• Snow-Hammer
• Stormblade

Quests

• Joining the Stormcloaks
• The Jagged Crown
• Message to Whiterun
• Battle for Whiterun
• Liberation of Skyrim
  • Rescue from Fort Neugrad
  • Compelling Tribute
  • The Battle for Fort Sungard
  • A False Front
  • The Battle for Fort Snowhawk
  • The Battle for Fort Dunstad
  • The Battle for Fort Greenwall
  • The Battle for Fort Kastav
  • The Battle for Fort Hraggstad
  • Battle for Solitude

Joining the empire will let you kill and dead thrall Ulfric, he retains his voice clip AND he uses shouts. Although he can only be thralled if the player is lvl 34 or lower.