I think you'd be best suited to doing PvP enough to get the Gladiator's War Staff...
# Binds when picked up
# Staff
# Two-Hand
# Speed 3.00
# 134 - 278 Damage
# (68.7 damage per second)
# +35 Intellect
+48 Stamina
# Durability 120 / 120
# Requires Level 70
# Equip: Improves resilience rating by 25.
Equip: Improves spell critical strike rating by 36.
Equip: Improves spell hit rating by 21.
Equip: Increases damage and healing done by magical spells and effects by up to 199.
CCompare that to some of the gear listed above, and it really is a no brainer. 27K honor and 40 AV marks makes it yours, but it is worth it. Or, you could pvp for the honor and marks and just hold it to whenever they release it's S2 counterpart, which should be any week now.
It's pretty much, barring the other Arena staves, the best staff you can get until you beat TK and get The Nexus Key.
____________________________
"Do you know what "nemesis" means? A righteous infliction of retribution manifested by an appropriate agent. Personified in this case by an 'orrible c*** : me."