I've tried them all. The studio are O.K (but for that price tag, O.K is certainly far from enough). The Studios are more balanced, but are insanely uncomfortable and again, the price is just way over the top for what you get. And then come the Solo. Man, these things suck. They are compact and well built, but they don't even clamp correctly on small heads and the sound...THE SOUND; they are the only beats I can tell you that really really suck. They are in Sony walkman first gen headphone territory, but with mushy bass.They shouldn't even be selling these. I don't even like them; the only beats I dig are the Mixr, but haven't tried them; although I'm pretty sure they sound as bad as the Solo.