The iMac I hope to purchase will be my entertainment system... i.e., all movies and TV shows will be watched on it from a nearby couch. I'm hoping the internal speakers will suffice. If not, are there any affordable but quality speakers I should look into? However, for those times when I want to listen to music and/or watch movies or TV shows right at my desk, I'm also interested in picking up a quality pair of headphones. I don't want to buy Beats, but I'd like the best quality I can get. Top quality, top of the line, etc. On a related note, are there headphones that emulate surround sound?