I reviewed the Dunu DK-2001 a little while back; I'd say that's the IEM that's most impressed me within that price range.
The sound was fantastic, the cable and design very nice, and they are absolutely tiny; they're the first IEM that I can comfortably wear whilst lying on my side in bed with zero discomfort. Highly recommended.
As I mentioned to you previously, I was hugely impressed by the Fiio FD1 in terms of value. The only thing I felt it lacked was a more expansive soundstage and greater separation. Everything else about it was faultless at that price (and even if it had cost about $100 more).
I currently have the new Fiio FH3 which I should be reviewing in the next couple of weeks (got a bit of a backlog!).
That's around $150 I think, and if the FD1 is anything to go by, then the FH3 promises to offer great sound and outstanding value too.
But let's wait until I've actually heard it lol. Or read other people's reviews and impressions
But it uses the same dynamic driver as the FD 1, which sounded really good, plus BA's, so I have high hopes for it
However, these are just general recommendations.
What genres of music do you most like to listen to?
And if you know whether you have any sound signature preferences (neutral-reference, audiophile bass-head, warm, organic, musical etc), please let us know those too.
Then we could really give better recommendations