I'm a long time wet shaver (over 45 years). I have tried many blades over the years and mainly use Feather blades (made in Japan).
When I trial a new blade make I compare it to a Feather.
These Gillettes are so close!
Not the extreme (insane even) level of sharpness of a Feather, but oh so close.
My trial shaves gave me a week of good shaves. So, 3 shaves per each side of the blade really. The last shave was pulling a wee bit as the blade had lost it's original edge by now.
But this is certainly no worse than a Feather blade.
You win here because the Gillette blades are cheaper.
I would not recommend a new wet shaver to start with Feather blades, because until you develop the correct 'touch' a Feather will quite happily peel your skin off.
The Gillette blade is much better. Sharp, but not at an insane level!
I am confident in recommending these Gillettes, be you a new chum, or expeienced wet shaver.
A very good blade at a very good price.