I got a pair of these from Loot. Of course the sound quality isn't as good as premium headphones but for a budget range they are getting some good reviews so worth it to look out for when they're being sold cheaply. The K1 has better voice quality but I'm not really interested in a microphone so they suit me perfectly. The K6 has noise cancelling but sounds kinda like you're talking in a box.
The only disappointment is that I got a red unit and not the RGB shown in the picture. Would have preferred RGB or blue but seeing I'm not using the lighting I suppose it doesn't really matter much and it's mainly for show off and the red does look nice as well.