Don't know about Sparks headset. Go to newegg, they have almost 600 reviews on it, the vast majority have no problems.
I DO know, that if i set my work BB near the headphone 'receiver', I'll get some feedback when the BB is receiving a message.
This is not unique to the headset though, it happens with other things. And some of the people on newegg said something about to much metal right next to the receiver causes some background noise.
I use my headphones daily. Not just while gaming. I work out on my treadmill every day, anywhere from 45-min to a full hour each morning. And sometimes a second work out in the eve.
I watch movies and stuff on my computer to keep entertained while doing that "mindless" walking. That's the primary reason I bought these headphones, so i didn't have to have any wires stretching across the room.