http://www.computerweekly.com/feature/Buyers-Guide-what-next-for-virtualisation
http://www.businesscloud9.com/content/red-hat-pushes-open-virtualisation/7595
V-Index.com has some interesting survey results: http://www.v-index.com/primary-hypervisor-in-use.html
gVa recommends http://www.cyanogenmod.com/
Good instructions for rooting and installing. If you have an HTC phone, the only thing you’ll miss is the HTC Sense features.
You’ll have more space, better battery life and a newer version of Android.
No competition really. Hyper-V claims to be free but there’s still a cost with the Windows license.
Hyper-V vCPU to Logical CPU ratio is a poor 8:1 for virtual servers (12:1 for Win7 desktops so long as the exact criteria has been met).
vSphere 5 ratio is 32:1
Hyper-V now has dynamic memory but requires some manual tuning.