I love Opera 12.16 (last 12.17) and used it loooong time. Many times I tried other browsers and since 1 month working on new Opera (ver. 25). Just a few extenstions (e.g. Classic Tabs, TabHamster) , change some experimental functions ( opera://flags/ in address) , changes in opera settings - and now new version is not so bad. Many shortcuts and gestures are the same (not all unfortunetly). I recommend to try it.