Summary: I've been using this recorder for a couple of years, and it's been very useful and reliable. I'm responsible for creating minutes from project meetings, and there are often 10 or more people around a large conference table, usually talking over each other.
Summary: I replaced a smaller and two-year older Olympus recorder with the DM-520. Upgraded to Sonority Plus. Worked like a dream for three years. Purchased 6/28/10 from Amazon. Before going in for surgery in April 2013, I checked all devices (cameras, recorders, flash lights, etc.
Summary: This report is early: the DVR was purchased fairly recently. I have found the DVR wonderful for picking up small meetings (a dozen persons all within 4 yards from the DVR). Its stereo pickup "separation" (left from right) is amazing!
Summary: I love this recorder. I ordered from Amazon and the shipping was expedient and delivered on the date they said it would be. I use it for my voice lessons and it records beautifully. I have never test the time limits/battery life since the max I record at one time is an hour.
Summary: If you are a student in need of a recorder to "tape" your lectures ... this is the recorder for you. I am not a great note taker so I needed a device that I could rely on to basically back me up on capturing the lectures.