Magit is really fantastic. I used to be a person who used to pay for a GUI. Once the billing model changed for my former preferred GUI, I bit the bullet and took the time to learn Magit. I don't regret it one bit. Some of the main perks for myself are easy selection for partial commits of files, amazing support for interactive rebasing, really sane key bindings. When I pair-program with others who are CLI users, they are impressed by Magit every time.