Has anyone had experience with the Edirol R-09 audio recorder? I am going to order an audio recorder for classroom use. It looks like it would be good but I am not at all sure in this area.

I want a device with very good sound quality. I want to be able to go back and listen to what happened in the classroom while we are blogging. I want a device that lets me transfer voice data to a PC that will plug directly into the computer’s USB. I don’t want to have to load specific software to make it work. This way I can share easily with the teachers I’m working with at school. It would be nice if the recorder could pick up sound from a distance in the classroom. I would also be using it for interviewing and to record my thoughts as I travel back and forth.
I want it to have a long battery life but also be able to plug it directly into a power outlet. There may be some other things I should consider that I have not thought about.  I feel overwhelmed with all the choices and I would most appreciate advice from those who know much more than I do in this area.