Just received my Oriolus mark II (Chinese version, I believe the difference with Japanese version is just the cable) this Monday. Have just listened to it for a few hours. Overall impression is great. Impressive clarity, wonderful mid range and trebel. Bass is great too, but I still prefer the bass on IE800. Also got FX1100 at the same time. Have been listening to IE800 for one or two months. Haven't done side by side comparison between them.
Interestingly, the fit is perfect for me (using the L-size JVC spiral dot tips)! The best among FX1100, IE800. Probably because I have large ear/ear canal? To me, the largest tips of IE800 are still not large enough.
Planed to mod FX1100, as I had good time with modded FX850. However, with Oriolus, I have lost interest in modding FX1100, as I reckon Oriolus can still easily beat modded FX1100.
To me, IE800 still wins on the bass response. Listening to the soundtrack of Pirates of the Caribbean, it's just amazing. It beats Oriolus on this part, but Oriolus wins others, especially the mid range which I listen the most.
So I think I will put IE800, FX1100 up for sale soon. The only IEMs now I am still interested in are JH Angie.