You might take a look at Chandler. It's free and has webaccess.

http://chandlerproject.org/

Process actually does have an easy way to show all your upcoming tasks and Items. The "Smart Projects" feature works very much like Smart Playlists in iTunes, in that you determine the contents of the smart project by a defined set of search criteria. For example, I have a smart project that shows me all the tasks that are due this week, and I have another one that shows me all the tasks that are due today and are over due. It's pretty flexible and I think it works well. Process also integrates with the standard iCal todo database, and you can use iCal and Mail along with any other app that utilizes that database. This widget comes to mind. http://www.apple.com/downloads/dashboard/email_me...

I'm a college student that uses Process to manage his course work, and misc home stuff. It works pretty well, though, I've never used most of the programs you reviewed.