In the past I have heard good things about Moxilla Firefox, but never got around to using it. A superb guru installed Google Chrome on my laptop about 4 years ago and I've used it ever since. One reason he did so, he said, was because it isn't "back heavy" -- it doesn't have lots of extraneous stuff loading in the background. I'm not saying that is still true for Chrome, or that it *is* true for other programs. I just like Chrome, haven't had a problem ever, and use that still.
Jan in VA