Back and forth with GTD
I am similar position, realized I had implemented some but not all. This site and forums are definitely providing inspiration and motivation. Recommend "Digging out of Backlog" webinar for help.
I was doing capture but not going back and collecting then processing (which makes a review impossible!). Been doing a re-boot this weekend and realized for home I was using multiple places for list manager which caused me to resist reviewing it. My job requires separating personal/work, so for work I have Outlook which I am good about using, it was home that was challenge and easiest to ignore. Realized I always have iPhone with me which has Evernote app and cleaned that up.
So just go with what's easiest for you, what attracts you. What will make it easier for you to do a weekly review?