Originally Posted by KaenW
I'm looking for VPS which should have greater flexibility and performance so i had confusion on virtulizations. XEN or KVM which is better to handle and run VPS ?
In that case it likely won't be the factor that will has much if any impacts on your experiences. Given that XEN HVM and KVM are in their basic components are the same.
BUT the machine your on? The density management of said machine? and other factors? You bet that they matter MUCH more than the virtualization used. Even a GOOD OpenVZ VPS can outrun a BAD XEN/KVM VPS as a result of overloading and etc.