Dryer sheets or bounce?

Do what you want, but be aware of this:
Almost all dryers—both electric and gas-powered—have a cycle that promises to prevent overdrying of clothes by detecting moisture levels and turning off the cycle when the load is dry. The cycle operates using an electronic moisture sensor that is embedded in the dryer drum.
Dryer sheets can cause the electronic moisture sensor to become coated with chemical residue. The coating prevents the sensor from working correctly and can cause your clothing to overdry (and increase your utility costs). If you use dryer sheets, locate the sensor and use a cotton ball or swab dipped in rubbing alcohol to clean it once a month.