Help with sound mod

Hi somebody know what is the best audio mode (speaker, headset etc) for this telephone?

I found this:

-http://forum.xda-developers.com/z3-compact/themes-apps/d58xx-lolli-pop-sound-mod-t3077136
-http://forum.xda-developers.com/cros...d-mod-t3117618
-http://forum.xda-developers.com/cros...s-ben-t3174157
-http://forum.xda-developers.com/z3-c...p-726-t3090683
-http://forum.xda-developers.com/cros...sound-t3130504
-http://forum.xda-developers.com/cros...-v11z-t2900697
-and the viper fx on the store

thank you so much!