When comparing systemd-boot (Gummiboot) vs BURG, the Slant community recommends BURG for most people. In the question“What are the best Linux bootloaders?” BURG is ranked 4th while systemd-boot (Gummiboot) is ranked 5th. The most important reason people chose BURG is:
A big con is that it can show graphical menu to select your OS and there are numerous built-in themes to choose from. Also you can easily install others.
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Pros
Pro Simple to install and maintain

Pro Very fast
Loads instantly
Pro Graphical
A big con is that it can show graphical menu to select your OS and there are numerous built-in themes to choose from. Also you can easily install others.
Pro Based on GRUB
Since it's based on GRUB, it can handle everything GRUB can, which means it's pretty full-featured.
Cons
Con Part of systemd
Just another pointless feature for an init system.

Con Only works on UEFI
systemd-boot can only boot EFISTUB kernels
Con Terrible to debug
Like everything else on systemd, the problem starts if something goes wrong.
Con No more updates
The project seems dead and haven't had any updated since 2013.
Alternative Products
