Best Mage weapon?

What's the best mage weapon in the game? I was thinking between the master wand, ahrim's staff or the obsidian staff.

P.S. I have 70 attack, 70 def, 90 mage

 

Isn't the Staff of Light the best?
http://www.tip.it/runescape/?rs2item_id=9071

Edit: 5 more attack levels, It's worth it in my opinion ^.^

 

70 attack :/

EDIT: I dont plan on raising either, plust master wand has higher mage bonus

 

True, If you are looking at it though, i'd take the melee stats because they aren't to bad and can hit high, I've used it before
But anywho, I suppose I'd go with master wand if you have no intentions of leveling up attack.

 

even over ahrim's?

and btw what's best melee weapon for 60? and 70?

Also, whats best shield for 70 def? I currently use obby for sw cuz its not bad and looks tight

 

With only 70attack Master Wand.

 

if you can, blessed spirit shield

 

i cant afford that. My price range is up to 10 mil, the spirrit that is, i am gonna buy the master wand, thanks for the help, is the unholy book the best mage offhand?

 

mage's book would be.

 

If you are not gonna raise your attack, then master wand is best choise i guess

 

just to let you know even though master wand has a mere +3 mage bonus over the staff of light, the staff of light gives 15% more damage to spells compared to master wand's 10%.

 

not raising attack

could you guys help me out with this too :
http://www.sythe.org/showthread.php?t=909044