I tried the free month and what I like is that it has some enforcement for the GTD Workflow, and even walks one through a Weekly Review. Also nice is that it has Areas of Focus, Goals, Vision, Purpose built into it. However, I also find the interface sometimes a bit too restrictive. Things that should be simple (finish an action and then immediately add a new next action to the project that action belonged to) take many clicks in nested menus and screens. Plus, it's not the cheapest option out there. I was wondering if someone stuck with it for a longer time and wants to offer their thoughts? I haven't found much detailed discussion on it in the search. Maybe a simpler list manager would be better, but I'd definitely want something that lets me automatically link next actions to projects, because if I have to do that manually I know it's not going to happen.