What's the difference from wd tv live streaming and wd tv live plus?

what’s the difference from wd tv live streaming and wd tv live plus?  I bought a wdtv live streaming but all my video files (m2ts) the video played ok but after 10 seconds or so, the audio would go out.   So I returned this but I was told that the wdtv live plus does not have this problem.  Does anyone know if the wdtv live plus plays the m2ts files good with no audio problems.?

This is a known issue with the latest firmware update :

Playback Issues with M2TS, MPG, MPEG, and TS video files containing Dolby, DTS, and PCM

http://community.wdc.com/t5/WD-TV-Live-General-Discussions/WD-TV-Live-Plus-HD-all-file-types-Video-Stutters-no-Audio-worked/m-p/313940#M26229