In my experience, the standard Cat blades do not perform as well as the Mags. The stds, because of the molded foam, thickness, and rounded edges do not bite and hold on a stroke and tend to feel a bit soft, where as the Mags don't. The stds i have had have chipped a lot, so they have gone on spares. The Carlisle Outfitters bite well, but seem to deteriorate more in the sun over time (which everything does here) and also bend more easily. That said my Cat Mags have bent slightly over time too, but not as bad. RE the weight thing, given the counter balanced Cats i dont think a couple of ounces are noticable and the counter weights make up for the difference.