I m going to buy a mp3 player before to get the NWZ-ZX1 or AstellnKern AK100 MQS and therefore i hesitate between the FIIO X3 and COWON iAudio i10 and HiFiMAN HM-601 and iBasso DX50 but i don't know which one to buy. Can you give me the positive & negative these models thank you

My experience with the Sony mp3 players (the NW class) has been very good. However, don't expect an Ipod level of multi tasking abilities. Sony's mp3 players play music very well, excellent in fact. Everything else they do okay. So if its music you want, I recommend the Sony. The other players you listed: no idea on their playback quality.

Hands-on: Sony NW-ZX1 high-resolution Walkman review | whathifi.com (http://www.whathifi.com/blog/hands-on-sony-nw-zx1-high-resolution-walkman)

ok thanks you if someone have some opinions I'm interested

Sony.

I have a Coby Mp3 player and that company is now dead.

I'm going to upgrade to a Sony for a temp use until I save up for an iPod.

About a year ago, I used to read great reviews about Cowon products being the best and all (than iPod), if you have a set of tracks, go and demo a few players and you can choose what you like.