My local small business that deals in AV has a big sign over their headphone shelves and racks that reads
"That moment when you get a good pair of headphones, and hear instruments that you didn't know were there before."
My knowledge is more limited to car audio, IMO, the best place to spend money on media enjoyment, when your a college kid, who virtually lives in their car, and is on the road ALL the time, as I am. A 15 minute drive to work from my apartment, 30 minutes from work to make it home for dinner, 40 minutes to get to my parents house from my apartment for dinner, 30 minute commute to the community college from my apartment. And depending on traffic, an hour to get to the local private courts or the cities recreational park, which have good looking courts. Unlike in my part of the county (yes, county) where no one knows what tennis is, and if they do, they think its basically a commie plot, like soccer.