I agree, the dremel is great! I used to clip mine but they were always rough and would still scratch even when short. The last time they needed done I took them to the vet and had them use the dremel and all 3 of my babies did just fine. When they got home their nails were soft and rounded on the ends so they didn't scratch when they jumped up and there was no clicking noise when they ran through the house on our hardwood floors!
I will definitely have their nails done with the dremel from now on.