I love the Lansky. It gives you a well sharpened edge at a great price. If you compare the cost of a Lansky to the cost of sending your blades away, the Lansky wins by a landslide.
Is a sharp edge important for cutting?
You could plod along with a dull knife, but once you sharpen your blade with a Lansky, blunt won’t do.
The Lansky isn’t perfect, but the few niggles are negligible, especially considering the price.