vMotion Priority for individual VM

Hello,

I have a question around individual VM vMotion settings.  Here is the current setup and desired result.

Setup:

• ESXi 5.1 ENT+ cluster & 5.1 vCenter
• Dedicated 10Gb vMotion vLAN
• Storage I/O configured
  • High priority VMs have higher shares

Situation:

• During a host entering maintenance
  • All the VMs try to vMotion onto different host at the same time (automatically determines how many simultaneously)
    • High priority VM are now trying to fight on the same level as normal or low priority VMs for vMotion bandwidth/resources

Desired Result:

• Set a flag on high priority VMs that they are always moved with preference during a vMotion (I know this can be done if you move individual VM [standard or High priority] options during vMotion)
  • This way (for example) if there is a transactional DB, it is vMotioned first with protective shares before a file server

Any suggestions?  I have not found anything yet but hopefully there is an advanced parameter I can set on a VM.

Thanks

B