The sound is very good and I did not find it necessary to replace the supplied noise-isolating in-ear earphones with expensive ones. The noise isolation is good with music though it does not work so well with speech. The FM radio is fair quality for this sort of product. It is easy to transfer music and podcasts from computer to the Walkaman using Windows Explorer. The supplied software is good. For example, it is possible to automatically transfer all podcasts from the computer to the Walkman using the content transfer program supplied.
The web-surfing, podcast and YouTube built-in functionality are too frustratingly slow to be useful. The pictures and videos are crisp and clear with vibrant colours. But I doubt if most customers need the internet, pictures and videos functions on a Walkman when they are best performed on a computer with a fast internet connection and a big screen. Wish Sony would bring out a product like this solely for listening to music, podcasts and maybe radio in the same high quality as this Walkman but without all the other useless gimmicks.