IMO the option should only be changed if required, and since a VM usually boots from the virtual disk, there's usually no need to edit the boot settings.
Thanks, but I don't think you understood my OP. Two guests both had different options to boot from as setup when Player created the VMs. Neither of those default boot options were the Virtual Machine!
I have currently set both to boot from the VM Machine, but would like confirmation that is the correct thing to do.
Generally the default settings work as expected when first creating a VM and installing from either Optical Media or ISO Image assigned to the CD/DVD. This assumes the CD/DVD is configured correctly, connected and pointing to bootable media. Otherwise one can boot for any supported, properly configured bootable device.
Here are screen shots of the typical defaults.