I use Chrome. Last time I checked it was the fastest browser available and now, if there are improvements, we almost can't see the difference so I keep it. The security is ok. I have access to the extensions Adblock, Ghostery and Google Dictionary and it works great. The bookmark system is easily set-up (I have a lot of bookmarks) so it's a plus.
uBlock Origin is a lot lighter than AbP. My main beef with Chrome is every now and then they'll roll an update that causes their extensions to leak like balls and then when I look at activity monitor every tab is running like three processes. And then you have to kill all the extensions until Google figures out that they screwed the pooch. And then you diddle around for a while trying to find something better and you realize that, much like email clients, browsers are the shittiest thing on your computer because for some reason nobody can write a webpage that fits in under a MB and doesn't rely on eleven fucking extensions to run.
That reminds me of a talk I listened to recently - The Website Obesity Crisisnobody can write a webpage that fits in under a MB
I will give a try to uBlock Origin soon, thanks for the tip. Do you use other extensions that you find great ?
In my opinion, the trick to Chrome is to run as few plugins as you can get away with, as every plugin and every tab is a process and the more processes, the slower things run. I run 1password, Ghostery, uBlock Origin and Google Hangouts, and I occasionally disable Google Hangouts because it seems to be a primary cause of Chrome misbehavior.