I think I'm slowly liking the IP's more and more. At first I thought they caused irritation, but that was probably due more to my technique. I've had an IP my Merkur for the last 2 days, and have been loving it along with Mama Bear's soaps. It seems like the blade pulls a little bit, but I am getting BBS with no irritation by only doing 1 WTG and 2 ATG (E-W & W-E) passes. I took out the S-N due to some irritation with a feather 3 days ago. I might be on to something.