Just got my zealot up to 55, and he is currently using Crescent Moon in a Phase Blade. The thing is beastly fast and the CTC Static is fantastic.

I have a Lightsabre lined up for 58, but I'm not sure if I should switch.

I was debating keeping both of them and using the LS on switch once the static from CM got monsters down to half health.

For comparison:
Crescent Moon
10% Chance To Cast Level 17 Chain Lightning On Striking
7% Chance To Cast Level 13 Static Field On Striking
+20% Increased Attack Speed
+180-220% Enhanced Damage
Ignore Target's Defense
-35% To Enemy Lightning Resist
25% Chance of Open Wounds
+9-11 Magic Absorb
+2 To Mana After Each Kill
Level 18 Summon Spirit Wolf (30 Charges)

Lightsabre
+150-200% Enhanced Damage
Adds 10-30 Damage
Adds 60-120 Magic Damage
Adds 1-200 Lightning Damage
5-7% Mana Stolen Per Hit
5% Chance To Cast Level 14-20 Chain Lightning On Attack
20% Increased Attack Speed
Ignore Target's Defense
Lightning Absorb 25%
+7 To Light Radius

I'm just not sure. Most of the guides I see assume you can get Grief or BotD, and my weapon choices are much more limited than that.