Rapid Set or Slow Set Tile Adhesive?

I'm gearing up for a bit of DIY at home—got some walls and floors to tile—and I'm a bit stuck on which tile adhesive to use.

Any brands you swear by?

Also, what's your take on rapid set versus slow set adhesives? Is the quick-setting stuff worth it, or is it better to take my time with the slow set for a better finish?

Would really appreciate any tips or recommendations you've got.