Well, Taliban Afghanistan, for a start. No stupid red-tape about "detainees" to have to mess with; they would simply be P.O.W.s. Simple. Direct. No questions.
AFTER Afghanistan? I dunno. You tell me.
No need. When we refused a transfer of Bin Laden to a "neutral" country, the Taliban declared war ON US. This war is using the precedent set by the Barbary Pirates war and it is the ONLY rational model to follow.