I use Safari because it's best by a mile on macOS for power consumption, but if you ever use a memory hungry site like Facebook for more than a few minutes it throws up a memory usage warning and everything becomes extremely slow and you get astronomical scroll jank. I'm guessing that's because it throws a hard cap on tab memory usage and if you go over that it thrashes wildly. So it respects your system, but in doing so is harder on the user for some of the most commonly used websites and might be whacking your drive.