Cora's nails grow very fast and straight. Her daycare owner is also a Groomer so I have her do nail clips in between Cora's regular grooming.
Rupert seems to wear his down so I just wait for his grooming.
Years ago, I cut the quick on my Min-Pin. She (and me,too!) was so traumatized that the clipping had to be done by the Vet for the rest of her life. so, now I leave it to the Groomers!