Choosing the right Virtualization-HA-Clustering CLOUD

Confuse, yup confuse to choose the right virtualization among opensource project, all of it has great feature and great tools.

1. Xen hypervisor
2. KVM

An the tools are :

1. Ganeti-ganeti web manager
2. Openqrm
3. Proxmox
4. etc

Any idea what to choose or just pick it up and test it?

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