I've gone from GTD to Notion to Obsidian to Amplenote. I like the simplicity and robustness of Amplenote in that it combines tasks, notes and daily journals. I particularly like how AN organizes tasks based on priority / date added / time available – I can simply get into the flow, keep adding notes / tasks when they come up, and just know that I'll get to the important things at the right moment.
Is Amplenote simply effective or effectively simple? I'm yet to decide. It feels like both atm.