[H] Bioshock + Bioshock 2 [W] S.T.A.L.K.E.R.: Shadow of Chernobyl or Resident Evil 4

I have Humble Bundle gift links for Bioshock and Bioshock 2.

I'm looking to trade both for either S.T.A.L.K.E.R.: Shadow of Chernobyl, the S.T.A.L.K.E.R. bundle or Resident Evil 4 HD on Steam.