I use opera as my main browser on mac, because safar sometimes doesnt load some content, i was very pleased the way opera was functioning, i have it installed in all my devices even on android, but the last version really went wrong somehow, the 28 version is perfect in speed battery usage and all, another thing is that the autoupdate feature should be removed or give the user a chance to disable it.
I hope these things could be fix it in the next updates because i really like your software.
Keep it up.