If you just want to try, I would suggest contacting VMware sales - they can get you access onto a cloud solution to showcase the products in many cases.
Your question is a little hard to answer as it really comes down to scale - if this is for a small setup (less that 50-100 VM's) I would just use vSphere (vCenter+ESXi) and use something like PowerCLI to automate. If looking at a much larger setup, then something like vCloud Suite would be a good place to go - however it is not trivial to setup and configure, it does take a lot more planning to get "right".