I consider Roadmaster, Kole, Cody, Rockwood, Dual, etc. as "junk". If it's too crappy for Walmart, it's junk. A step above them is Pyramid, Pyle, Boss, Lanzar, Lightning Audio, entry Audiobahn, etc. A step above them is entry Pioneer, Kenwood, Alpine, Sony, Blaupunkt, HiFonics, Orion, Polk, etc. Then all of those brands have another level or two with RF, JL, ID, RE, etc. You don't hit "high end" until you're dropping a grand per item. There are many price points and many different levels of quality.

I would put Boss next to most Audiobhan. However, Boss is still in business, and where is Audiobahn?