I'm an engineer by trade, and a very busy one lately. I've also been struggling to get more organized with my time management. I've tried the Franklin planner thing; too bulky. An early Palm Pilot; too small and difficult to use(luckily paid for by work and now obsolete and dead). The Groupwise calendar. Good for looking at meetings but too time consuming to write in tasks.
Finally I cleared off my desk and went back to a method I used in college, the classic desk pad calendar. I bought the Staples version, which is very functional and cheap. I keep it under my keyboard for handy reference, which forces me to keep a cleaner desktop.
Being a visual person I like seeing the whole month laid out in front of me. I can scribble in my meetings (way too many!) and to do list for each day. I use Sunday to lay out the major goals for the week. It has also given me space to doodle during long phone conferences. Media: standard office tools - black pilot pen, red, blue and green colored pencil and highlighters.