If you want to buy a Sony Walkman MP3 player with a large amount of storage then the 20GB MP3 player is the best option, the 20GB Sony MP3 players have enough room for roughly 5000 songs which is enough for even the biggest music collections. The 20GB Sony Walkman Mp3 players are quite expensive though as the 20GB hard drive costs quite allot of money, if you are looking for a cheap Sony MP3 player then one of the MP3 players with smaller hard drives may be a better option. If you want a Sony MP3 player with huge storage the 20GB is a top choice though as it will be hard to fill, if you wish to buy a Sony Walkman MP3 player with 20GB of memory then we have listed some below with the cheapest first: