Again one of my favorite quest and secret on my server as not many people do these quests.
This quest provide you with the best equips as rewards.
THQ is one of the best quest and best part it is official quest so it is there on max servers available there
The most seeked equips are Mjolnir and Balmung
Balmung can only be obtained this way officialy though getting 2000 token will be work of nearly 2 years
but its worth the efforts.
To do the quest read this THQ quest guide
and for complete reward list read THQ Reward List