For perfectly consistent slices and juliennes, a mandolin slicer is a great tool for every kitchen. Ideal for shredded coleslaw, cucumber ribbons or perfect radish disks it is an extremely versatile tool.
They range in price from $30-$100, so it really just depends on your budget and taste.
Mandolines are available in either a plastic or all metal frames with a variety of blade types – straight, v-shaped or diagonal steel blades. It is up to you if you prefer the hand held or the ones with the fold out legs. The hand held versions are great for holding over bowls or plates and the ones with the fold out legs I find are more stable. They all come with safety guards to keep your fingers safe. If using the guard is too awkward you could try using a cut resistant glove.
I would choose one that allows you to easily adjust the thickness of your slices and one that has a julienne attachment as you will find it much more versatile.