We use notion.so because it's beautiful, fast, easy, friendly and portable. We use for our clients, for our team, for my personal life, basically for everything.

The fact that you can create a Kanban in matter of seconds but also turn it in a table if you want it and at the same time share it in seconds with your client/team it's priceless, real-time editing also makes it beautiful for brainstorm meetings so everyone involved in it it's synced with whats being discussed.