Paredit is really not the closest or best comparison. If you want simplicity, lispy is often simpler than or at least as simple as parinfer. At the same time, it's more powerful than paredit. Even if you never used its special keybindings, I'd argue that lispy is more intuitive and has more useful default keybindings. The indentation-based inference doesn't add anything major as far as I can tell; it seems to just cause unnecessary problems. I think parinfer is more popular in editors besides Emacs because of the lack of alternatives more than anything else.