I have three Microplane branded graters--the long skinny one, a paddle that's a bit coarser, and a ribbon grater. Which one I use just depends on what I'm grating.
Here's another option. I have the fine version of this Good Cook grater. It has bi-directional teeth, and I like it as well as my Microplanes. They also make a coarser version. I got mine at my local Kroger affiliate for several dollars cheaper than what it's selling for on Amazon.