Great review, Grant! Like @Tokyospike above, selfishly I'd like you to turn your scrutiny to a razor I use and like, so I'd vote Tech, though I have a pre-war and I think the post war is favored for it's rigidity. The RR Old Type is a nice shaver, mild but quite rigid. It is similar to the Merkur 1904/1906 which I have, also. I prefer both with a shim underneath to create a bit more useable angle.
I don't have a Fatip, but based on the rave reviews of rigidity, I'll likely end up with one sooner than later.
I don't have a Fatip, but based on the rave reviews of rigidity, I'll likely end up with one sooner than later.