Musiktek is all good if you live in the US but if you're in Europe/UK or elsewhere, then what?
I'm not even sure Hifi-Go has really any right now as they haven't shipped mine yet nearly a week after purchase.
Living in the UK, MusicTeck is still my most trusted seller of 'boutique' IEM products. The standard of service is second to none, to the point where, even if there were sources of these products in the UK I would still probably give my business to them. It would be nice to have more options in this country, however.