I convinced my brother (who picked up grey knights mostly to spite me) to play a 800pt battle, and decided it would be a great opportunity to do a battle report for the blog.
Here's his list
Draigo, 275
2 paladins with halberds, 110
3 paladins, one with a Daemonhammer and psycannon, one with an incinerator and halberd, and the other with a halberd. 190
5-man Purgation squad, 4 psycannons, justicar has a Daemonhammer, rhino. 220
Here's my list.
3 Chariots of Tzeentch, each with Bolt, WaL and MoS, 330
5 Crushers, instrument, 205
5 Horrors, Bolt, Changeling 100
9 bloodletters, 164
The preferred half contained a chariot, the 5 horrors and 9 bloodletters, and the other half had 2 chariots and the 5 bloodcrushers.