I still love TextMate -- but I have to be honest, I switched to VSCode recently. The community around VSCode is hard to pass up, and thanks to documentation (and it being JSON), I've found it fairly easy to configure, and in a few ways, it's much easier to configure the whole UI. (pros and cons there...)

I won't say VSCode as stable as TextMate, and it certainly doesn't feel like a native Mac app in the same way, but it's simply easier for me to find plugins that I need.