I have just tried the Big Ben for the first time, meaning 3 shaves on 1 blade, but I swapped it between 2 razors.
I put the blade in my Parker 74R and shaved with it 2 times.  I swapped it to my Henson AL13M tonight. VERY close shave in both razors and in all 3 saves, but it gives a feel as it cuts and is audible. I hear it a bit more then with other blades and I can feel the gentle tug, but that's what I thought was odd.  Tugging is usually a sign of a dull blade but this feel was not the same as a dull blade.  It was different, and felt good actually.  I was VERY satisfied with how close the saves were.  I use Feathers sometimes and this was every bit as close a Feather blade, but the feather is a bit harsh at times and this Big Ben was not, despite the feel and the sound. I wonder if the polish angle of the edge is steeper then many others.  A steep edge angle parts the object being cut with more of a forcing the cut open side to side, but that is not to mean the edge is any less sharp.  As a wood worker with over 1/2 a century of experience I understand edge geometry and I am going to guess the Big Ben blades are very sharp but sharpened at a steeper (higher) angle.  I can't say for sure without a way to magnify the edge and look, but that's how it feels. Iif I go through all 5 and they are all the same, I will diffidently be buying more.  I really like the saves it gave me . 
 If all are the same as the 1st one I will be buying a few hundred of them later.