I found the Baili 131 base plate is flat like the pre and post war Tech. My 56' Tech has a rounded base plate. In use, I found the 56' Tech felt better and shaved closer than the pre and post war Tech. The Baili 131 also gave me a great smooth shave very comparable to the 56' Tech. The Baili 171 did not work as well for me. I tried handles and blades to no avail. I agree, the 171 felt scratchy and did not shave as close, required more passes and buffing. YMMV but for me, the 56' Tech is a great razor and the Baili 131 is almost its equal. I want to try the Black Tiger and will order one soon.