Quality of the blades unfortunately nachlassend

Unfortunately, keeping the Gilette Mach3 Power blades no longer so long as older Gilette blades.
In the Zwischenueit can I still use current Gilette blades 5-7 times, the "old" blades have 7-10 (sometimes even more) kept shaves.

The Mach3 Sensitive has been much better suited to my face as the ProGlide - that made me really quite surprised. Above all, I feel the favorable Mach3 blades are even slightly better.

Even very cheap Gilette Sensitive DISPOSABLE (!) Razor (Sensor 3) have a shelf life of 3-4 shaves. Thus, they are cheaper in the long run by more than 50%. (6 pieces cost 6 euros, compared with 4 blades for 20.- EUR!)
Thus, I will now switch back to the disposable razor. Unfortunately, I will be without function that shaved more thoroughly then on the "Power". Here you could clearly notice the difference if you used this function or not.