I just posted about this in the other forum. I just came back to GTD. I've used the Palm, I've used Franklin Covey, At A Glance, blah blah blah. I think I'm now in love with my Circa binder from Levenger. I loved the 3 ring binder, but hated that I couldn't fold the front cover back - it was too bulky. I loved my Franklin, but it was too small. The Circa is a bit of a pain because you need a special punch, but I like the ease of moving the pages around.
I had already bought an AAG month at a glance before the Circa. I can rip the pages out, punch them and insert them in my Circa. I like monthly planners. We use Lotus Notes at work, but I have very few appointments at work, so I just transfer them between the two (I know, I know, bad!) But I check them regularly.
Plus, I can always make my own pages and insert them.