Few Days back i bought a "Sony Network Walkman" NW-E505".Sound is great ,+3 to --4 settings for bass & for treble also(for up & down) .I had blue aone .Looks great.Metal body on the back side & plastic on the front,Cover for U.S.B port is quiet flimsy or delicate.
{ Headphones r crap ,u can use only in sitting position .
Belt cover is also delicate}.
About sonic stage 3.0 (supplied)very easy to use software .i can bet u it is far much better than previous version
Features:

Supports ATRAC3plus and MP3 formats. Incorporates 512MB of IC memory - enough to record the equivalent of 23 CDs (*1). Built-in wideband FM tuner The built-in rechargeable lithium-ion battery delivers 50 hours of continuous playback (*2). Supports USB bus power for blazing-fast file transfer - 3 hours of music playback by just 3 minutes charging.
The organic EL display enables up to three lines of text display. Multilingual track-title display: English, Chinese (Simplified Chinese) and Korean The jog shuttle can be easily operated with one hand. SonicStage Ver. 3.0 (CD-ROM) makes ripping, editing and transferring of music files a snap.
*1 In ATRAC3plus 48kbps mode, assuming 1 CD = 60 minutes of play time.*2 In ATRAC3 105kbps mode.
Dimensions (W x H x D): 84.9 x 28.8 x 13.9 mm Mass: approx. 47 g (including rechargeable battery)Operating instructions: English, Chinese (Simplified Chinese, Traditional Chinese), Korean, Japanese, French, German, Italian, Spanish, Portuguese, Russian, Dutch, Swedish, Finnish.

NOTE: SONY CLAIMS 512MB BUT YOU WILL GET ONLY 487MB(UR COMPUTER EXPLORER & SONIC STAGE WILL SHOW.