Well i have a Logitech G530 system which is now about 8 years old and it still preforms insanely good neighbors at the end of my complex still complain when i play BF4 on the 5.1 system,
Ofc i wouldn't mind that big Logitech system but in my house i would have to replace windows often then and the missus won't love me much for that
I prefer headphones while gaming on a PC as it aids in immersion... We've got a soundbar with wireless sub for watching movies and playing games on PS3/4.
I like using speakers during the day, but at night, private listening is preferred, as other house members may want to sleep whilst I'm awake watching a movie, series or playing a game.
I used to play with the surround sound in the lounge (for my xbox) but ever since I got my headphones, that's all I use because I'm usually talking to people in a group chat so I might as well have all of the sounds in the headphones