I thoroughly enjoyed these!
Personnas were smoother and sharper than Merkur and Astra. Merkur was the least sharpest of the 3. I am quite convinced that I need not look any further than personnas, so will order these in bulk now.
I have medium thickness in mustache hair for reference.

These are superb for me.
I think I have medium thickness mustache hair.
For me, Personna is definitely better than Merkur and Astra. Personnas were sharper and smoother. Also seems to stay sharp longer.

Will be buying these in bulk now.

I've been shaving for a while both DE and straights and tried all sorts of things. It is pretty hard to surprise me and TBH, I wasn't expecting much from these as there was so much hype around them and I've become pretty immune to it in the wet-shaving community. Still, I thought it was worth a try so I bought a small pack of 5.

I only started using the Personnas this year and from the very first blade, I knew that something very special was going on. At first, I wasn't sure I was shaving - there was no feedback, it was super slick across the face and yet I was getting a very nice, close shave. I have thick, dark growth and have been used to noisy shaving since I was a boy so that was the first real shock. I kept touching my face after each stroke: "is this damn thing cutting the hair?" only to find that it most certainly was!

About a week of use on the same blade and I was still having the same experience. I was genuinely amazed at the ability of the blade to keep producing that close, relaxed shave and amazed again at the edge retention.

It's no guarantee that these will work for you but definitely worth a try as part of a mixed pack.

Absolutely love these Personna blades,I get a stupidly smooth and comfortable shave everytime. I also find them very forgiving if you make a small mishap - yet with the perfect amount of sharpness to take care of those pesky whiskers!

I have read excellent things about these blades, but for some reason I find them to be a bit harsh. They're sharp, not badly priced, and do the job though. I'd use them again.