When comparing Bullet Train vs af-magic, the Slant community recommends Bullet Train for most people. In the question“What's the best theme for Oh My Zsh?” Bullet Train is ranked 7th while af-magic is ranked 10th.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Info and prompt on 2 separate rows
Pro Git and Mercurial supported
Pro Working directory name truncated when long
Pro Version info for Python/NodeJS/Ruby/Elixir/Perl
Pro Included with oh-my-zsh
Pro Great for skimming through lines of output
The colors and extra line of hyphens makes it very easy at a glance to see where one command ends and another begins.
Pro Shows directory and git branch where applicable
Pro Reliable
No incompatibilities between many different systems, fonts and OSes.
Cons
Con Can get slow on big Git projects
Con Sometimes the path gets in the way
Even though it abbreviates paths with ~
when they are in the home directory, deeply nested files or long paths often force the prompt to be squished against the width of the CLI, or in extreme cases wraps around multiple lines.
Con Better options for 'full-screen' cli use
Out of the box it misses out on features like battery remaining, time/date, etc.
If you're using a terminal emulator with a normal desktop environment, this is typically done by a status bar, but if you don't have this you may be better off with alternatives.