I tried Medical Prep Personnas for the first time on Thursday. The razor was my Mergress. I shaved with the blade on Thursday, Friday, Saturday, and Sunday and will shave with the same blade later today. This is a record for me: I have never gotten more than four shaves with any blade. I will give a more detailed review in the review section after I try this blade in other razors.
The lather used was a combo of Mama Bears unscented and Gillette Menthol (with glycerin added). I have a heavy beard and shaved twice on Saturday the last shave with a Speick Shave Stick. The shave was two passes to clean up some stubble that grew since I shaved for the first time early Saturday a.m. Normally, I would shave with three or four passes when I shave twice a day. However, two passes did the job - again without any irritation.
If I had to give just one word to describe the shave with this blade it would be AWESOME. It does not feel that the blade is sharp - but it must be because I got the closest shaves I have ever gotten without any irritation, cuts or nicks. In fact, I normally have to touch up my neck after my ATG pass - but not with this blade. It cuts close but is very smooth.
I really can't compare this blade to any other I have tried largely because it is so smooth. There were times when I wondered if the blade was actually cutting my beard but the tell tale stubble in the sink told the story. For me the closest blade I can compare it to is the Personna Reds - but the medical prep blade seems to be smoother and is lasting much longer than the reds.
The only complaint: it's difficult to purchase this blade without ridiculous shipping charges. I wish some of the wet shaving vendors would carry this winner.