I have my engine sounds turned down a bit. Somewhere around 30-40% I believe. I do it simply because I don't need the endless, meaningless RRRRRRROOOOOOOOAAAAAAARRRRRRR RRRRRR!!!!! of my engine pounded into my skull.
I keep my "wind" , guns, and "stall buffet" etc turned up high so I don't end up with any real advantage based on sound. When I would stand to gain the most from hearing external sounds (low, slow, turn fighting) the stall buffet (wind-type) sounds drown out any external sounds. Like others have mentioned, I look out the window to find the bad guys.
When folks chat on vox my other sounds all drop away, and all I can hear is the vox. So that is not the issue.
Nobody has mentioned the obvious difference between the engine sounds in game vs real life. In RL, the pilots wore headsets to minimize the external sounds, and maximize VOX sound. They still do. In game, we wear headsets to pump ALL sounds in. So when it comes to headsets and engine noise our game is OPPOSITE of RL. RL= headset keeps sound OUT. AH= headset pumps sound IN.
Wearing a headset is my only option when it comes to AH. My family doesn't need to listen while I play.
I think that if HTC changes the way sounds volumes are adjusted, they should make ALL EXTERNAL sounds dim right along with the players EXTERNAL sounds. Your engine would block out or mask external sounds anyway. We don't need to be able to hear them by turning our engines down. What advantage is gained by hearing ack popping, or bombs dropping, or richochetting bullets anyway?
MtnMan