Short update on the Playaz AR100, 'cause they deserve it. I initially thought these were very similar to the Sonia II and even used the same EQ settings, but recently discovered, that their bass is less intrusive, so I can use less EQ. My current settings on the Cowon i9 are -6db@80Hz, -3db@220Hz, -1db@780Hz, 0db@3kHz, 0db@13kHz.
Playaz seem to strive for less bassy IEMs lately, which is a welcome development IMO. The AR100 have a very clean and pleasant midrange for the price and smooth, detailed and extended highs. Cymbals are the best I've heard from phones this cheap and can keep up with much pricier ones. Bass is well defined and does hardly interfere with the mids, so you can tune the warmness to your liking without losing sound quality (of course presuming you use a good EQ). They don't quite have the big can sound signature and extreme airiness of the N1, but overall they are the most refined Playaz offering to date, making the €25 IEMs new leaders of my bang/buck ranking.
