When it comes to blade's, it is Different Strokes For Different Folk's.
So this is just my opinion and my view's. I've bought several different variety packs of blade's.
Each one had some different blade's and some of the same blade's. I will say this, to get a true reading of a blade you need to have at least three of that blade. Machine's aren't as perfect as we like to think they are. For me, most blade's either nicked/cut, pulled or worn out after two shaves. However, I do admit, it is my tradition to shave once a week, not daily. Take that into consideration too.
These Pesoona Lab Blue blade's...each and every time I've used them they,
Did NOT nick/cut
Did not pull or tug
Did not wear out quickly
And did not "load up" in the razor head.
In fact, I got 5 FULL shaves out of each blade I used! That's 5 weeks for me.
And that's 4 passes per shave.
I shave down first.
Per shave each time. No other blade went 5 time's. The second best for me was the Wilkison(sp?) Sword blade. But they were as consistent as these Pesonna lab blues were. And the Feather brand maxed out at three shaves. Buying them in bulk is much cheaper, but I was about out and short of cash.