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Back to Safari after using Chrome for a couple years. In the last few weeks of using it I started having kernel panics, when I looked at the logs I saw chrome mentioned so I decided to try Safari and they seem to have gone away.
 
On the list of reasons why I've gone back to Chrome and not Safari: Chrome can actually open Twitter. Safari for me just sits there and is like, "ehh, no". Maybe I'll get a server is not responding error or something, which is really interesting because the server is obviously very much responding in Chrome.
 
Safari
Chrome for its built-in flash player, for when Safari>Develop>User Agent>iPad won't work
 
I was a dedicated Firefox user until recently. I switched to Safari because Firefox was becoming a resource hog. Safari is much smoother. But I miss the ability to alphabetize my bookmarks.
 
Safari most of the time as it syncs with the iPhone; Opera for troublesome sites.
Recently been using Safari Technology Preview with no Ad block specifically for buying things like airline tickets from sites that have weird popups.

On ye olde modded 2006 MacMini on 10.7.5 in our kitchen/dining area its Opera 90% & 'Light' (based on Firefox) 10%.
 
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