Chrome is memory hog
I am still on Mavericks with 8GB RAM and looking forward to an upgrade soon. But I switched to Firefox long, long ago. My observation: (1) Safari uses the most momory efficient in Macs, but some websites don't work properly. (2) FF uses more memory than Safari, but compatibility is much better after v57+. (3) Chrome was great at first, but later became a memory hog and even buggy. Also, they started disliking adblockers (understandably) and kicked them out of Chrome marketplace.