Summary: I used this continuously for the first 2 years, but with the increased use of multi-purpose cell phones I have been using the phone for all the functions that this provided. At this point it is quite out dated.
Summary: The recorder has all the functions I needed and fits easily into my pocket. It's playback sound is great. I borrowed a similar Sony from a friend before I looked for my own recorder, that is what got me onto this model and style.
Summary: If you are about to get the Sony ICD-p620 first consider that it doesn't work with 64 bits computer nor with mac. My p620 work perfectly since 2009 when I bought it. Recently I got a new computer ( a 64bits windows 7) and cant no longer download and edit my recordings. Sony support won't offer any solution, the net is also full of the same problem with no successful solution. Without being able to use the Digital Voice Editor the ICP-P620 is obsolete. Be careful.
Summary: Sony does not provide drivers to interface this device to Windows 7 and Vista 64 bit versions. Once I got rid of my old XP based computer I have no way to access my recordings with my new computer. This is a puzzling limitation since all my other USB devices (camera, memory sticks, backup disk drives) work fine with my Windows 7. Very disappointed with Sony's lack of support - reminiscent of what happens when you buy a cheap no-brand-name accessory.
Summary: Using the unit standalone is fine once you spend half an hour getting used to it. The amount of handling noise the mic picks up does seem excessive but otherwise sound quality is fine. But the software support is beyond dreadful. Sony really ought to have just made this a generic mass-storage device but no, apparently that wouldn't be annoying enough. No problem, install the drivers you say. Nope.
Summary: I am a little bias here because I already have a Sony recorder (none-USB). I bought this because the USB connection to PC and more memory. It is like the old one. Small in size and powerful in features. I use two NiMH AAA batteries. It has four folders to organize your recordings. You can move files from folder to folder, you could append to an existing recording. Alarm, in case you need a reminder. Microphone setting in L or H. Recording quality in HQ/SP/LP.