A message for Talon players...
Please. Do not buy Ravenous Hydra as your first item.
I know you're thinking I'm crazy, but hear me out. Finishing Hydra is a waste of gold. What you really want is Tiamat, because of the active/passive. The only thing Hydra adds is 35 AD and 12% lifesteal. The extra AD is great, but the lifesteal is largely a waste because Talon is NOT a marksman or bruiser who benefits from dps. Don't get me wrong; the lifesteal isn't completely useless, but it doesn't benefit Talon's burst at all.
Talon benefits from straight up AD more than any other stat. So instead of upgrading Tiamat to Hydra for an expensive 1400g, save up 150g more to buy yourself a BF Sword (Or a Pickaxe+Long Sword).
I usually finish Hydra after I have my core build of 
.
,
,
,
, and
you should definitely upgrade to hydra earlier for the extended lane presence.