I understand the Content Guardian's dilemma. I have the same problem around here. I started to implement GTD with google notebook, and guess what? ..it works until the moment I have no internet connection
I need to convince myself that simplicity - as considered by darlakbrown - is the key to successful implement GTD.
I'm also a computer guy, and I have some difficulty to accept the fact that using paper is really the best resource I now have to implement GTD. Sometimes I think: "Hey, I'm a computer guy, I should use no paper". "I master all computer tools, it will look bad if I use paper"...
The point is, I need (as I think you also need) to implement GTD (and anything else) with the simplest tool you can find, master and be 24/7 available to your eyes.