GTD apps reviewed?

Good evening everyone, I’m pretty new to GTD, switched to Mac about 8 months ago. I’m reading the book now and am interested to know if there’s a site that has reviewed most of the GTD apps out there. There seem to be a good handful of apps (OmniFocus, iGTD, MidnightBeep) and I’m having a REAL hard time trying to decide which might be best for me. Right now I use Remember the Milk on my iPhone (very nice!), but I find that most GTD apps sync to iCal (events and tasks), therefore I can’t see my tasks on the iPhone.

Any pointers, in general, of what apps are good and which to stay away from? Thanks in advance,

Marc

Web services are great

If you're usually at the same computer this may not apply to you, but I have an iMac at home, a PowerBook G4, and multiple machines at work running Linux and/or Windows.

Since I've got a ton of machines and platforms in use, I run most of my stuff on the Web. Gmail, Google Calendar, that type of thing. I use simpleGTD for my project, task, and next action lists.

Best of all, it's free! I like it even better than RTM, because it's specifically tailored to use the GTD system.