I've moved away from using Ghost as I've started developing my own blog software, but I've always liked them. They make a good product, have a solid dev team, and are not motivated by building up capital but rather making a sustainable open source product.
I'm building something a bit different (and not as white) with PV4, but I do find myself inspired by what they've accomplished in their 5 years.
Lots of hard earned wisdom in their 5 year review post. https://blog.ghost.org/5/