I don't really use it for slicing grape tomatoes (which, at the moment, it is too dull to do a good job of) but for salads it's a dream gizmo. My sister makes fun of the itsy bitsy vegetables in my salads, and many of them got that way with this mandoline. It's not adjustable like my large one, but if you can get used to the size slice it produces (almost paper-thin, but not quite), it's great for Persian (seedless) cucumbers and for carrots and celery. I love how it almost turns celery into a vegetable that functions as an herb, since the slices are so small and thin the aroma and taste permeate every bite of the salad.
Love this little guy. Wish I'd bought more of them. Will start searching NYC for them, as this one is barely sharp. If you're reading this and have come across them in NYC, please let me know, and if you're near any of the Japanese dollar stores on the west coast, definitely pick one up!