Well, I have the $260 Beyerdynamic DT-831's, and I have the $20 Koss KSC-50's, and, let me tell you, the KSC-50's hold their own DAMN well against the 831's. They don't have the impact at high volumes, they don't have quite as big soundstage or seperation, they don't have quite as big feeling of the sound being in EVERY part inside your head, and the the mids aren't quite as sweet, and they don't have QUITE as much detail, but, they still hold their own damn well....There is NOTHING in those phones that "sucks ass". I could find now problems with the lows, which go EXTREMELY low, and are balanced and clear, the mids, which are detailed and clear, and the highs, which go extremely high, and are clear as well. However, at high volumes, they don't have the impact the DT-831's have at high volume.
But, just puting the KSC-50's on, and then the DT-831's on, there isn't that much of a difference, except with the way the DT-831's fill your entire head with sound, which you can tell immediately.
And seeing as how the KSC-50's are much like the Sportapros, uh, I don't see why you say the Sportapros suck....
And, Also, I think I can GUARANTEE you that the Beyedynamic DT-831's don't suck. THe only thing that can really beat em that you've heard are the Etymotic ER4S's, and you *need* to have those amplified WELL, AND you *need* to have a *GREAT* fit (which takes practice to get right, and you only listened to them once, correct?) to make em sound better than the DT-831's.
