So I was just wondering if any real world 737-800 or 900 pilots could chime in.  How are the default PMDG NGX sounds vs the real thing?  Also wondering how this 737 "Immersion" pack matches real life as well?  It's on youtube under "NGX Cockpit Sound Immersion".  I haven't been on a 737 in years so I can't remember what they sound like.  Also never heard one from the cockpit either for obvious reasons.  Just curious to know how each compares.  Wasn't sure where to post this type of question so mods feel free to move to the appropriate place.  

since  pmdg  has  taken  the  engine  sounds  directly  from  the  cockpit  i  say  they  are  pretty  close  to the  real thing