I bought my zed when they were still brand new and paid a lot compared to what they're worth now. I've also been here for a long time, which means I've seen almost every tom dick and harry come and then go. It also means I've seen and read almost every crapspeed story that comes up on here. They got that name on here because their customer service was so poor and so was the build quality of their work. As for sound, the k1 isn't beautiful its just loud. With the bungs out it makes interiors rattle at high revs. Its like the equivalent of comparing a classical brass musician with a retard farting through a drain pipe. Both make noise, and ones very loud, but only the classical musician makes a tune. If your happy with it, that's great, bit don't go telling me they're ubergreat when I've been here long enough to see how much they don't get it right. As for having my head up my arse, I think you'll find its called experience.