Looking for Users of Livescribes ECHO Pen

I would like to hear from people who have used LiveScribes Echo-Smart Pen. Can they recommend purchasing it. Is the regular model or the 8 gig model more useful?

My use for it would be in meetings where there is an amount of brainstorming and where I have to come up with conceptual sketches of my own and others concepts. There is a need for an element of traceability of original ideas. In one particular company, my experience is that people with a strong/loud voice claim concepts clearly forwarded by a much quieter couple of engineers. Often it is a few weeks between meetings on the particular subject and it is hard to remember details, so hard to refute the claims.

Is the pen particularly nice to sketch with. Does it have fine, medium and wide tips.