Holy crap guys, I was at the HK Audio Visual Expo yesterday and tried most of the qdc lineup. I was blown away by how good they sounded!
mostly agree with the impressions above - all of their product offerings have quite a full and warm sound - even the 3 driver one. To offer a clearer comparison, the Westone 4R with 4 drivers sounds much less full and warm than the qdc 3 driver, which has more focus on bass and mids reproduction rather than the 4R's emphasis on clarity in highs and more subtle bass impact.
The qdcs come with Live, Studio and "Hifi" variants - Live tended to be more warm and bassy, Studio more neutral, and Hifi sounded like there was more clarity and airiness to the mids and highs. Personally my favourite sound sig is in the Live variants.
I'm really tempted to get a pair for myself! Probably the qdc 5 - the 8 had even better detail retrieval but at nearly double the price I'm not sure I can afford it right now.
also to OP, these aren't earbuds - they go in ear
bonus image for everyone: