The Arrow Rack is more secure, can be mounted tighter and is lighter in weight (less torque). The Arrow Rack is superior if you're going to be hunting with your quiver attached. My 4 arrow Arrow Rack (2017 model) weighs 8 ounces. Keep in mind that each arrow also weighs over an ounce (440 grains = 1 ounce).
Currently have the TS on right now and it sits 1/2" away from the cable guard and is perfectly balanced. The rubber slide on the TS is more than just a vibration damper suspended in "limbo". It also works as a spacer for a tight fit to the riser by allowing it to touch the riser and helps with vibration directly from the bow at two contact points, one from the mounting system and one from the damper.
It works nicely with Hoyt bows, particularly the last few year models doing it this way.