Rook - Blood or Renewal
Demon Assassin -EoM always
Beast - Blade of the Serpent always, even for ooze, thanks to Magla for the schooling... you give up something early, but late game without the need for a helm you are rediculously ferocious
Reg - It doesn't matter much, but BotS usually, maybe anklet if there is no EB or Oak (rarely seen)
Sedna - Blood, but I am bad with Sedna so what do I know.
QoT - Blood, anklet, cloak of night or warmage depending on build and strat (they are all bad, no need to point it out)
Oak - Blood all the way
Erebus - Blood or HoB
Torch - Swift Anklet always