Staying with GTD

I have been on and off in using GTD for almost 2 years now. For some reason, I have never been able to come up with a GTD adaptation that I can stick to and follow for a long time. For a while, I used MS Outlook with various Pocket PC PIM replacements like Agenda Fusion and Pocket Informant. Most time was spent on perfecting the system rather than following it. This is one of the dangers of the GTD system.

Being off the system for a while, my "stuff" is all spread out now. In order to collect them and get things done, I thought I would rather use a software or application that is already customized for GTD so that I don't waste my time in coming up with my own "system". As I have migrated to S60 OS (Used in my Nokia N95) from Windows Mobile, there is a new problem because the PIM capabilities of S60 platform leave a lot to be desired. Unfortunately, the categories from Outlook do not sync with S60, so the Outlook method is highly ineffective. I started looking out for a web based solution, which should also have a PDA friendly web page. I came across iCommit, which is a decent enough application, but seems to be ridden with bugs. The summary view did not show the entries that I created. There were several other solutions, but none of them could properly work on PDAs.

I found a commercial solution called Nozbe, which seems to fit the bill. It has a simple yet powerful adaptation of the GTD system. You can create Contexts, Projects, Next actions, lists etc., and hook them all together. They also have an iPhone and PDA friendly webpages, which look very useful. The only annoyance with this site is that it has some big nag screens and affiliate promotion links strewn all over. The free access is very limited in that you can only create 5 projects and only one additional context apart from 10 other predefined ones. But still I am planning to continue using this for a couple of more days to see how effective it is for me.

Do any of you know of any free solutions that have a nice interface for desktop and the PDA phone? I am ok with hosting the web app on my own server too. Please let me know in the comments.