Opera 12 (pre-Chromium) used to have the features I mentioned built-in, which meant they were faster, fit in with the browser seamlessly and you didn't have to

Opera 12 (pre-Chromium) used to have the features I mentioned built-in, which meant they were faster, fit in with the browser seamlessly and you didn't have to worry about security. Best of all, you didn't need to use them if you didn't have to. Unfortunately the new Opera is missing most of old Opera's features, but you can give Vivaldi a try.