I use our big toe clippers for small puppies and the trimmer you buy at a dollar store.
You do not need anything fancy or expensive.
Just to add dog groomers hit the quick too.
1. If this is the first time you have clipped the nails, or if the nails are unusually long merely 'tip' the nail on the first session. The reason for this is that the quick can be very close to the surface and it is safe practice to become accustomed to your dog's nails through subsequent clippings. 'Tipping' the nail simply involves stabilizing the guide portion of the clippers to the surface of the nail and taking a very thin shaving of the nail off with the blade. Tipping the nail will cause the quick to recede a bit more each time you do it. This is especially comforting if your dog has black nails.
2. If by chance you happen to hit the quick of a nail and the nail starts to bleed, don't allow your dog to wrench away from you and run around. The reason for this is two- fold, by not taking control of this problem he will learn to fear the nail cutting. If you hold him firm and reassure him that you know it hurt, he will trust you. Second, you need to get styptic or corn starch powder onto the end of the nail. Simply keep the original grasp you had on the paw and press the powder to the end of the nail until the bleeding stops. You may have to keep packing powder for two to three minutes, but the longer you are able to apply steady pressure, the more effectively you will stop the bleeding. (Don't be concerned if your dog wants to lick the wound after initial bleeding stops. Do keep him from prancing about for at least fifteen minutes).
3. Trimming your dog's nails at home can be difficult. It is safest not to cut to the nail any further past than flush to the bottom of his foot. Accidents can happen, and when they do there's no need to rush of to the vet's. Run to the bathroom, dry off any excess bleeding with some toilet paper and grab a bar of soap that is fairly soft. With firm pressure on his toe, scrape his nail through the soft bar of soap. This should push the quick back and plug the nail, stopping the bleeding.
4. If it is really bleeding heat up end of flat knife on the stove and touch hot end on the nail. It will take two to do this job. Hubby and I had to do this a couple of times.
Trial and error. I have never found a nail trimmer that will stop you from cutting into the quick all dog nails are different, depending on how ofter they get trimmed.