I chose VirtualBox over qemu for performance. For size, Arc's installer will continue to shrink (it's down to 60MB from 140MB). A custom built VirtualBox shoul

I chose VirtualBox over qemu for performance. For size, Arc's installer will continue to shrink (it's down to 60MB from 140MB). A custom built VirtualBox should be quite small. However, VirtualBox does require admin to install while qemu does not. In the future, Arc will be agnostic and support multiple hypervisors. One could use qemu, VirtualBox, HyperV on Windows, kvm on Linux, etc.