MacVim is my favorite when it comes to UX. It starts instantly and stays fast even on huge files. It's very customizable and works exactly how I want, including

MacVim is my favorite when it comes to UX. It starts instantly and stays fast even on huge files. It's very customizable and works exactly how I want, including the layout of nested horizontal and vertical split panes. I like being able to configure just about everything in just a single config file, but still getting an additional escape hatch for overriding OS default keybindings I want to use.