Server specs - virtual environment

We are about to upgrade all our Tessitura-related servers, moving from old-school physical into virtual environments (not cloud!).   We have worked out that for the main SQL boxes we are looking at 64GB or 128GB RAM (the decision will be cost-based), with 4 cores.  We'll be looking to run SQL Server 2012 Enterprise edition (again, assuming we can get the cost signed off).  Is anyone with a setup as above willing and able to send me specifics of the tech they have used please?  Ideally looking for part names/numbers so we can go straight to reviewing and acquiring.

Many thanks,

Sarah