And the best unit bonus from temples is:

[Swordmaster]

+1 experience means +1 moral and +1 attack. So rather +1 experience than +1 moral and rather +1 experience than +1 attack.

Didn't know experience also affected morale, I thought only attack and defense. Oh well, too bad the in-game descriptions only say 'good' or 'excellent morale' or so.