JOFUYU Cat Nail Clippers - Professional Cat Nail Trimmer – Angled Blade Pet Nail Trimmer and Clippers – Cat Claw Clippers for Small Dogs and Cats - Safe, Sharp

Q: So what is the difference between the curved and flat? What would be better for an older cat?

Curved and Flat are the same function, just depends on your personal preferences. I believe both the elbow and straight style can help your old cat. So don’t worry, just choose one which you like.

Q: Flat blade or curved blade for cats

I think you have an option to get curved or flat. I got curved for my two cats. Works great but some one should invent something to restrain cats while their nails are cut!