I bought this item for the purposes of interviewing people and using it in the classroom. Overall, I am impressed. There's ample storage space and the design is fantastic. It weighs virtually nothing. Other reviews of very similar products have complained about the battery clip. I think it's all about the care taken over changing the battery - if you value your product you will be careful with it.
I have two small criticisms. Firstly, I wished it recorded straight into .wav format or .mp3 format. If it is possible to do this I've not found it in the manual. The built-in microphone is OK, but for quality interviews I would suggest investing in a decent mic as you'll get more punch in the lower frequencies and conference mode will work better. These points are why I've awarded 4 and not 5 stars.
My final point has not influenced my star rating as that's for the product. But... I wasn't impressed by the supplier. OK the product arrived in reasonable time 6 days rather than 1-2, but I wasn't in a rush. My problem was with the packaging. No branded Olympus casing was there. The recorder was simply clunking around in a white box with a manual, cable and battery enclosed. As a result the device has 2 or 3 scratches and dents on it. The manual was also torn. If I was even more sceptical I would possibly dispute whether or not I was the first owner? On the box was a sticker saying "1 year exchange warranty -no question asked" - all sounds a bit back of a lorry to me!