After moving all my personal files to my Google account and accessing them from my computer as well as from my iphone, I am almost reaching total integration and practicality. My agenda and my emails are automatically synchronized and both accessible form any computer and from my iphone all the time.
The question that still remains is: Which task manager to use?. Unfortunately, Google current solution for tasks is very poor.
But Google is not alone, until recently, most personal productivity software were also very basic or difficult to use. Outlook seems to offer a lot, but I have tried for years and I could not organize things in the way I liked. I wanted to related tasks with goals, with certain tags and other criteria and it was just not natural. Too much flexibility that ended up confusing me and not going to the point.
Now, I have discovered a web service that very naturally accommodates my style and I think it will accommodate yours: http://www.toodledo.com The site is can be used for free (or paid a little for some premium features). Toodledo is one more tool supporting GTD (Getting Things Done) methodologies.
Now, I can organize my tasks by folder, goals, tags, due date and many other criteria and I can see them on my iphone via a very easy-to-use interface that I can operate with my fingers. No need to synchronize. Everything will be in sync automatically. You can edit your tasks on the web as in the next figure.