The demo of the JH16 has very different bass, the soundstage is smaller, and the overall quality of the presentation isn't as good. I didn't do source comparing with the demo.
334 has a very different note presentation than the LS8 and JH16. From a note presentation perspective, the 334 is closer to the T1 Live!, DC4, or EM6 (based on what I have been told). I compared it with the Spiral Ear 5-way in my 5-way review.