In the early part of my adult life, I was an aircraft mechanic. So I have a long habit of very short nails.
I stick with regular drugstore type clippers, The best ones are US made "Trim" brand. Clip well, and have a small file that flips out. I cut when I get enough white nail for the clippers to catch. Then I follow up with a diamond dust nail file. Victorinox has a very well made clipper, but the blades are straight, doesn't work for me.
One tip, with my all nylon strings, nail clippers work fine as a string cutter.