Guys have you had a look at the Phoronix article below? KVM / QEMU has pretty impressive results.
[Phoronix] Intel Ivy Bridge Linux Virtualization Performance](http://www.phoronix.com/scan.php?page=article&item=intel_ivy_virtualization&num=1)
Has anyone had experience with KVM / QEMU and can vouch for this ? I am wondering if we should be taking a look at this Virtual Machine in place of Virtualbox. Does it offer similar desktop features as Virtualbox ?
My (limited) experience.
KVM/QEMU is indeed a powerful VM. For Desktop users however it still needs work. Virtualbox continues to do everything I need, and I will continue to use it while experimenting with KVM/QEMU.
KVM/QEMU is great. Have a look at this thread on how to create KVM virtual machines for Linux guests (only): http://forums.opensuse.org/english/other-forums/development/programming-scripting/453962-vm-create-create-kvm-virtual-machines.html. For Windows guests, VitualBox is better (faster). Once you have a Linux KVM guest, you should install a NX server on it an open NS session rather than connect through VNC (which is way to slow). If all you want is to run Windows guests on your desktop computer, VirtualBox is fine.