I am a fun of operamini, it is so smooth and humanity, small size with full-featured, the operalink is very good. I used it on my ex-phone which is an android. When change to wp, I expect to use operamini too.
When i know the operamini beta for wp released. I install it immediately.
My phone is Lumia 525 with wp8.1&cyan and operamini 9.0.0.
During these days ,on my phone, operamini runs stable, never crashed itself.
But there are some bugs and features need.

1. The chinese font is so small even i changed the zoom to max.I think you can refer to 欧朋 which is the China version of operamini.Its font size is good.
2. The typesetting is bad, there are many words can't be seen at right side of the screen.
3. There is no night mode.
4. I changed the search engine to another not google.after exit operamini and open it again, the search engine back to google.
5. The store shows that operamini has been updated to 9.0.2, but I can't install it from the store.