I have always installed really good stereos in my cars. Yeah, cars are noisy, but cruisin' with tunes is a big deal to me. I had a jl audio xd700/5 which got overheated sitting in a parking lot with the windows closed when I was on vacation. After two years of using my money for other, useful things, like paying off my townhouse, late Fall I sprung for an HD900/5. The is the most musical, best sounding amp I've ever heard. It is just wonderful. And I can hear lyrics in songs I never could hear before, even when travelling 75 on the highway. Combined with all of the soundproofing I've done, it's a nice result. (I forget what speakers I'm running, sorry.)
I do run a tube amp setup at home, but it's lower-end stuff. I have heard truly high-end systems, and have gone to stereo shows, but that's a dream for another day.
Most modern music is horribly overproduced and overmixed, probably to sound better through crappy earphones.