The quality of construction seems excellent in this cutter, and it feels good in one's hand. It takes only slightly more pressure than peeling a vegetable, and for softer ones like zucchini, it takes no extra pressure at all. It's very easy and makes nice small julienne strips. They are a healthy addition to salads, soups, and sandwiches, and I now use them much more often and in a greater variety of dishes than I did before I bought this cutter.
My suggestion for easier cutting, since the blade is so sharp, is to stand the vegetable on end and insert a regular thin knife into the center of it. (It works best with softer veggies, but it can be done with hard ones too.) Then, holding the knife vertically, use the other hand to cut with the peeler along the side of the vegetable. You can have as long or as short julienne slices as you wish; just make your vegetable piece longer or shorter according to the length of strip you want. Putting a knife in the center gives you a good hold and keeps your fingers away from the julienne cutter. It also allows you to cut closer to the core of the vegetable, so little is wasted.
The other suggestion I have is that instead of re-using the plastic cover that comes with the gadget, which I think can pose a risk of cutting you as it's removed, just use a small strip of felt or some other fabric to wrap over the blade before storing it.
I love this gadget and would recommend it highly! It's dishwasher-safe too.