I want to keep my admin name the same as it was on my vB forum. What's the best thing to do? Should I give myself another admin name while installing Xenforo? On my test install I used the same name and merged the 2 together.
Create the default admin user with the same username from vB. Then it will be merged during the import.
Usernames are preserved when importing. It might be auto-merged by userid during the import (userid 1) after which you can edit that account in the XF Admin CP to change the name if necessary. Or if the userids don't collide then the import will still prompt you to merge the accounts if they have the same username.