The difference between the Echo and the Wifi version is in the name itself. To retrieve the audio and writing, the Echo needed to be connected to a computer whereas the wifi version syncs wirelessly to the application Endnote. I already had an Endnote account and the application on my ipad and now my laptop. But it is easy to set up Endnote if you haven't done this yet.
I realise not only is this tool going to come in handy for my qualitative data collection for my current research product but also for meetings and seminars as writing without recording audio is an option as my notes will be synced and can be transformed to readable text.
Have you used a Livescribe smartpen in your research?