I bought these about 4 years ago, and I've been using them on and off ever since, alternating between my portapro's and ksc75's. Obviously both koss headphones sound far superior to the veiled uninspiring sound of the halo. But I keep coming back to the halo. And here is why. The sound may be veiled and uninspired, but it isn't horrible either. It makes for a good background headphone, while I read some head-fi articles during my commute. The music is just there. It's not engaging, but it isn't bothering me either. I use them on my commute (train or...