So I have 2 shaves in with a new-to-me post-war fat handle Tech. I have had a pre-war Tech for some time now. Right now I prefer the pre-war Tech. To me it shaves closer with less effort. The post-war is probably smoother, but I am struggling to find the angle for BBS on it. It seems to have a very narrow window of effective cutting angle. Granted I'm only 2 shaves in. I'll hold onto it a little longer, but if I don't get the angle after awhile I'll BST it.