Right now I am pretty torn between their two IEMs, the JH10x3 and JH13. After a lot of listening experience, I have found that I do enjoy a bit more of a colorful sound, rather than something that is totally neutral. I listen to most types of rock, excluding metal, and a limited amount of rap. I am worried that the JH13 will be very very neutral because it is such a high end piece. Although that is technically very good, it is not what makes me want to shout.
I am a little concerned about the very low resistance of the JH10x3. I want something that I can listen to directly out of my iPhone 3G or iPod Touch 2G without any hiss. I may buy either a Pico Slim or RSA Shadow, but even if I buy one, a lot of my listening will be done straight through the headphone out of either of the devices. Also, Please don't turn this into a "you must amp" thread. I know the benefits of an amp, but in truth, I will not use a portable amp 1/2 the time because it is just impractical for me.