I agree, KVM on Linux is amazing and there's nothing that comes even close with performance IMHO.

However, my problem is that I'm stuck with Windows 7 at work, so I have to use something like VirtualBox to run Arch on it.

I'll try getting one of those SATA-over-USB converters and I'll get my SSD to the office, hopefully they'll allow me to boot over USB so I can run Arch and bypass Windows completely.