[beharkey]

I too am a knowledge worker.

I have 7 contexts. One of those is Errands and contains 11 subcontexts. Another of those contains 3 subcontexts. So, in total my contexts and subcontexts add up to 21.

I currently have 9 single action lists, 16 active projects, 4 projects whose start date hasn't come yet and 6 projects that are on hold.

I have hundreds of actions (not in the mood to count those).

And I have 7 Perspectives:

Today (due today) - in context view
Available - in context view
Remaining - in context view
Projects - all projects
Inbox
Waiting - my items that are in my waiting for context only
Review - project view grouped by next review

That is plenty of perspectives for me. I start the day working in the Today perspective and choose the particular context I'm in at the moment. After I've finished the things that are absolutely due today, I move to available and work in whatever context I want to or find myself in at the time.

Simple. That's the key to GTD. Make it work for you. Not the other way around.

And by the way, if you have a recommendation for Omni Group, email it to them. That's the way to get it on their radar - not the forums.