tomscy2000
Headphoneus Supremus
Sounds like your ears don't get along with the treble. I don't get any harshness/peaks at all.
I have leaned toward smoother treble signatures for the past few years but in general I've been quite treble tolerant (no need to do so, but if you look at my posts from 5 years ago you'll see I had a preference for pretty bright signatures. This is all besides the point though. As long as you don't think it's too bright or spiky then it's a good thing of course!
I don't have that many Single DD IEMs. The other two are around the same price range.
Your missing out man! just listened to Dunu's limited edition single DD. It's a revelation! I like it better than the Dita models.
Also, the modded JVC FD01 and FDX1 are highly impressive. Highly recommended.