Hand Pollinating Eggplant

How much luck do you have with the paintbrush method? I'm 50/50 with the electric toothbrush. I am wondering if I should switch.

Last year was my first year with eggplant. It was a beautiful black beauty eggplant that kept throwing blooms for months. I read somewhere to flick the flowers and lo and behold! lightly flicking the flowers daily gave me a sudden surge in fruit production. 60-70 % made fruit, took but a minute a day, so extra equipment to bring to the garden and remember to take back out..