Red Emerald,
I totally appreciate the "value" of a Mac, and what you pay for. But value is relative to the person getting it. I have absolutely no use for the Mac except to compile binaries on it then go back to my hex-core, 16 GB RAM, dual 1920x1200 monitor desktop to continue developing stuff. I don't really care how amazing it is, because I know I can execute my one mission (compiling binaries) on a used system. Maybe one day I'll be bored and decide to spend more time digging into it... but it's not that time yet.
I will explore the VM options, first, then consider a physical system. It sounds like others have experience with the VM approach, so many they could email me and help me out After all, there's a reason I have 16 GB of RAM in the first place: to run lots of VMs. I don't know what you mean by "borrow" a system, if I go with a physical one, I don't want to have to return it.