Disappointed at first use

For several years I've bought. I bought several packages. I regretted. Upon first use, you feel they cling so that this impression should appear only after a few times of use. I'm not saying they do not intersect, but they cut cling, they do not slip. The previous store-bought glided very well, hence my surprise on first use one purchased on Amazon.
Hard to tell if they last long because I shave once a week and so by default I do not often exchange blade.