Same. I regularly switch between light and dark mode. For me, dark feels more comfortable in the short-term, but I find that I can't use dark for an entire day. Anyways, I previously used solarized. It's very pleasant for a certain period of time, but like many color themes that I like, it doesn't actually "scale" in the sense that I can't use it for extended periods of time. Gruvbox, on the other hand, I can use for very long stretches.