There's no such thing as the "best".
It will depend on your needs. The "best" template would be the one that users enjoy using the most and/or the one that makes you the most money.
Also, this question isn't quite appropriate for HN or even a site like StackOverFlow.
Why not design 3 or 5 bases and let us pick 1 for you.
If by best, you are referring to the 1 that can kickstart your work quickest, then the 1 that is easiest for you to understand whilst giving you the most to work with will be the "best".