I think I'm a convert to Visual Studio Code.
When I first looked at it I thought it was going to be too heavy because of having to install mutliple packages etc. That was on Windows but on the Mac this doesn't seem so much of a problem. it all seems a lot simpler.
I've installed a small set of extensions for PHP, CSS and Markdown which should cover my simple needs and upgraded the bundled version of PHP in OSX to 7.1.
Atom.io has been uninstalled along with a standalone Markdown app, although I have kept another editor called TextWrangler just as a lightweight scratchpad.
As a result, this is the first post not written on my phone since I can remember. Now I just need to find a way to post directly.