So what is different this time... Strain Relief where the cables exit from the housing, right angle jack, better cables, smaller housing so you can stick it deeper to keep more ambient noise out and this means lowering the volume... and protecting yourself.

imo they good and cost effective for budget  good treble and bass
the only thing i gripe bout it is the build quality 
they always break and tear espically at the cables and near the phone cables where it connects to the drivers

Okay - out of the box impressions.

To get on with the inevitable Yuin comparison:
IMO, these offer a different kind of sound compared to the PK series. From what I remember of my PK1s before I sold them, the PK1s have a darker, more bassy sound - which caused me no end of headache from the time I used them to edit a video with techno-ish background music.

The HR-1s seem brighter, with perhaps a more forward midrange as well. Bass is not as prominent as the Yuins, with both using the foam donut pads. Of course, the Yuins did have a fair advantage in terms of run-in. The HR treble seems to be more scratchy (but I think that's because of the amplifier) and it's a good thing - more faithful treble reproduction!

I've actually been after Uncle Wilson for these for quite a while, ever since I tried the prototype when I first got my Yuins (way back in April). Right now, there are times when I don't want to use full-size headphones or IEMs, like with my laptop at home to watch online lectures. The 'buds don't squeeze up in my ear, plus I can munch on stuff without the noise travelling up my head.