What is your character’s best use of heat?

Every character has some special uses of heat, some better than others. Even heat smash are built different, some character’s heat make their neutral better, some make their combos better, what is your character’s heat specialty outside of standard heat dash?

For the characters I play: Reina - 3+4, 4, 4, the extra kick makes the string safe and the whole string does more damage than her heat smash. Her Heaven’s Wrath parry is also pretty neat if the opponent habitually presses.

Devil Jin - Ending combos with 3~4,1+2 or b,f2,1,4,1+2 significantly increases combo damage. Outside of that mainly his 2 heat smashes.