XIB +8 at 130 ap (80 poison)
Helenid +8 at 130 ap (100 glacier)
At first glance I would choose the helenid since it has the extra elemental.
Is poison elemental damage better than glacier?
If the Helenid is better, how much better is it as far as cost? (1-2gb's)
Can you still use the attack scroll that drops from Ancients in CZ with the helenid and not the iron bow?