I first wrote about the Springpad notebook organizer almost a year ago now and was immediately impressed by the offering. Since then, as improvements have come across my desk I’ve always revisited it and found it to be a capable part of any organizational arsenal.

And yet, I still haven’t been using it in my daily work. You see, a couple of years ago I found Backpack from 37signals and was smitten with it. I created Backpack pages for everything: tracking client information, article ideas, concerts I’ve attended, purchasing, research and more. If I started something new, it got a Backpack page.

However, as much as I loved Backpack, there were some gaps. I found the calendar lacking, instead using the Google Calendar. Reminders and To-Do items were much better handled by Toodledo, and the sheer volume of information I was managing with it often got unwieldy.

So when I had a look at the new iteration of Springpad that was released earlier last week, I finally took the plunge. Goodbye, Backpack … Hello, Springpad.

At first glance, the two products might seem very si