Pretty good

Would like to be able to move around the tabs though. Also, it would be nice to sync history between devices. It seems to keep history on opera mini separate from desktop.

Update 6/2016: the ad blocker doesnt work on certain sites, but seems to have basic blocking features. Needs to be turned on by tapping the red O.

Debater of talkatone and mo+ about Opera Mini web browser, v14.0.0