Windows 8 Client HyperV vs VMWare Workstation

So. I was about the slap VMWare Workstation on my laptop, then I realized that now HyperV is now a feature for Windows 8, and not just Windows Server.

1. How is battery life with HyperV enabled? It's a Type1 I recall, so the Windows 8 I use every day would actually be running somewhat on top of HyperV. How much affect will that have on battery life?

2. How does client HyperV compared to VMWare Workstation feature wise? Unity mode? USB3? Linux Guest support?

Thanks!