It depends on my mood and the situation. If I'm at my apartment with my roommates we're likely to be listening to vinyl or cassettes through one of two speaker systems, nothing too high end but it still sounds great. If I'm lounging around and really decide to focus on music I'm going to throw on my headphones and eliminate any distractions, and chances are it's going to be something with depth and layers to be distinguished. Like Pink Floyd, or Ariel Pink, stuff along those lines. Most nights though, I'll just have some ear buds in since it's hard to to listen to music with headphones when you're laying down in bed. But other times, like right now, all I want to do is go for a drive in my shitty car and throw in a Rolling Stones CD and blast it. The best way to listen to music is whatever way appeals to how you're feeling and what you most want to be doing in a given moment.