chiswick72

Hi Steve,
 
I had a listen to the two versions and they are both fine.  Kyle's recording was made in the middle of the beta phase and since then I have continued to evolve the sounds - the main changes I made was to add more high frequencies in the mix balance.  That explains the difference in the recordings.  So there is nothing wrong, you are listening to different versions of the same soundset.
 
Now, if you prefer less of the high frequencies, you can always manually adjust the individual sound file volumes to get the sound mix that you prefer, but always back up you files before making any changes.
 
And finally, go with the recommended sound settings so that the panel sounds and voices balance correctly with the engines.