In theory, it's nice because I don't pay attention well so it's great to have a record so I can go back and listen.
In practice, I find that I rarely feel like I have the time to go back and listen again. It has to be super important to get me to do that.
This might just be me though. In general, I take a lot of notes and then don't refer back to them. I tend to have a separate pad of stickies where I write next actions, so they don't get buried in the notes and I can just throw them in an in-basket and process them.
I am in the UK and have been using a Livescribe Pulse with I think was the model before the Echo, for the last 2 years.
I have used both the single subject pads and also printed my own paper & bound this into a pad.
I currently use the single suject pads. I try and keep good notes during meetings and mark any next actions with large dot in the lefthand margin, which I then transfer into my system. I only use the recordings if when looking back at my notes I am unsure of the meaning/context etc.
You can also covert the notes into typed text, which is useful if you need to publish minutes/actions quickly.