Too many options

I'm still in the process of reading the Getting Things Done book, and while reading I've wondered about how to go about and implement the system. I'm not even sure I want to go "all in" on the system, so where to start? Mahler sent me this link, that talkes about using Thunderbird to GTD. I've also read about some people who use a basic Hipster PDA, and David Allen himself uses a Palm handheld. There are even personal Wikis that is targeted the GTD audience. I'm allready using Thunderbird at work, but I use Mail.app at home. Perhaps I can achieve the same thing using both, I'm not yet sure, since I haven't read the whole article about using Thunderbird as a GTD tool. I like the idea about using just plain old paper, since doodling and scribbling things on paper is much faster than trying to input stuff into a PDA. On the other hand, I've got a PDA, and I like the idea of being able to carry loads of information with me, but then how do I input? The personal wiki's are kind of cool, but I'm not in front of my laptop all day long, and it seems rude to be working on a laptop during a client meeting, so I'm not going to drag it along. So far, I think I'm starting out with plain paper for capturing, with some sort of software to handle the lists. The reference stuff and other larger amoutns of data could also be stores digitally or at work/home. It could be cool, if I could somehow have my lists with me on my K700i phone, since it's small enough for me to want to carry it arround all the time, and then have a small notebook with me too, to capture stuff. I just haven't found the right software for the phone, and I haven't even looked for a small notebook to know if I want to have one with me at all times...