Who is better to help? The king or the rebels?Not morally, i want a BIG reward.Who gives it?

For a powergamer you should help the Rebel and then betray him.

::nod nod:: Help the Rebel Prince, then take your reward from the treasury, then take one last look at the Temple of Sekolah for any scrolls or whatever you might need, then kill all the fish people and loot their twitching corpses! Bwahahahaha!

Sounds like big, chaotic evil fun. :D

you guys just saying that or is it actually a good idea? cause i just arrived at the fish city...

Ah, just kill 'em all. They're all fish, anyway......where's my butter & corn on the cob?

The person who asked wanted the most loot. Though for the moral high ground, help the rebels and just pickpocket them.

One thing has been forgotten.

If you are a Monk, help the King and kill off the Prince. The King will then reward you with the Gauntlets of Crushing, the best gloves for a Monk in the game. You cannot pickpocket it off the King, or loot it from him, so helping him is the only way. After you get your reward, kill off the King and any other remaining Sahuagin.

You consider theft to be the "moral high ground"?

Well... it is one step away from blatant murder. ;)