do not worry, I miss things sometimes too!!
You can use the command has you prefer. if you evaluate a condition, obviously, the command will be triggered only when this condition is true.
It is up to you only ... there are not restrictions.
With "Reboot and Resume" command, the installation will restart before the Windows shell and other startup programs have been loaded.
With "Reboot and Login" the installation will restart after the Windows shell and other startup programs have been loaded.
So the use "Reboot and Login" is suggested when used during pre-requisite installation, especially if you are mainly targetting your installs to new OS such Vista and Win7.
But I repeat, It is up to you only ... you may test the differences and use that one for you most useful.