Not hugely keen on Opera any more (nor IE). It gets stuck a lot on my system and the inflexibility in copying Speed dial favourites is annoying. Also often doesn't play media successfully - the video stops after a couple of seconds and I have to go to Chrome (which I think might have some common code, not sure).
And didn't have a good experience with Panda AV - seemed to upset my Skype. And AVG caused some problems so uninstalled and went back to Eset. That said. a friend uses AVG with no problems and we both run the same PC config.