When comparing NERDTree vs tig, the Slant community recommends NERDTree for most people. In the question“What are the best tree explorer plugins for Vim?” NERDTree is ranked 1st while tig is ranked 4th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Easy to use
Pro Supports most of the file operations
You can easily add, remove, rename, copy, move etc. files from inside the editor in a intuitive manner.
Pro Allows you to stay in the terminal
If you prefer to do most of your development inside the terminal, changing windows to move to a GUI git client can be annoying. Since tig runs inside the terminal, that's avoided.
Pro Fast
Pro Vim-like bindings
Pro Available in Homebrew
Can easily be installed with homebrew simply by running brew install tig
Pro Works on any platform
Cons
Con Steeper barrier to entry as compared to a GUI solution
Since you have to get used to working in the terminal (if you are not already used to doing that) and learn the commands, it has a steeper learning curve than GUI clients which are usually more intuitive and easier to grasp.