Overall, I like this app. I really want to LOVE them, but they make it hard to do this. I started with Nozbe, and then I looked around at others. Nozbe is near perfection because it is simple and easy to use without a bunch of junk you don't need. Nozbe would achieve perfection if they could solve these 3 problems:
1-The web Nozbe is fantastic, but dates on the calendar are often off by a day. I can't trust it. So now, whenever I put something on the calendar, I type out the exact date and time in addition to the "due date". I love Nozbe, but why can't they freaking fix this. CAN'T THESE GUYS FIX A SIMPLE CALENDAR PROBLEM. I mean....does it take a year to fix a calendar/date problem? Sheesh
2-The Nozbe calendar is pathetic. This is just a serial list of dates. Very hard to visualize mentally. Please go see Pocket Informant for a real calendar.
3-While web Nozbe is great, it only syncs with the Iphone about 98% of the information. I just hope that the directions to your heart transplant center are not the 2% that are lost...but who is counting? I lots of my someday/maybe entries are in the wrong category and won't move to the correct one.
Why am I still with Nozbe? Because I can't find anything better, and it works well enough, plus I don't want to waste a bunch of time trying to find another app. The only others that I'm interested in are Action Lists with Mr. Perry and ToddleDo. I like how GTD specific Nozbe is.
I guess the best system is the one you design. I think that paper is actually the best, because, essentially....you are the designer.
I still can't believe that all these programmers out there can't produce a GTD based list manager that actually has a calendar that works, projects, and contexts that actually syncs. I would design it myself, but I don't know how to program. Geez....this is pathetic.
I always had fun with my GTD when I was using index cards, then I'll just have Toodledo web for Someday/Maybe and projects on my IPhone and then I'll carry a gaggle of index cards with me also. I always had a visual paper calendar on top of my index cards, so it was hard to miss an appointment.