I have made several very uninteresting remarks about this question before (in this thread: Is using xen as the hypervisor makes as much sense now as it made before?)
There is also some related discussion in the interminable “Mythos” thread. I spare you from the link…
I know where my bet is, concerning the equation of
(number of hostile searchers × number of exploitable escape bugs) ÷ (number of friendly searchers)
I also know I could be wrong…