Automatic asks for everything needed at once.
So there is no further user input needed until done.
The only downside is, that all fonts in all xui files will have the same new font.
But honestly, I guess it would be that way anyway as Default.xzp uses only
Xur conversion will follow up soon.
Step by step (hope I'll not get sued by NKOTB...)
and the "Automatic" choice, quite simple and self-explanatory