I all. We currently use ESX 3.5 in production but not heavily. I do not have a VCP certification. I have a V4 certification of completion for taking the class back in 2010. I was wondering if I should pursue the VCP 4 or take the vSphere 5: What's New then VCP 5 exam.
Most of my virtualization was done under Hyper-V.
Clarification: I do not hold a VCP4 certification. Just the class completion.