Dioni thanks for the test. It’s interesting to me that your durability tests and measurements align the TYTO blade with the Havalon 60XT blade, however the sharpness and edge retention does not reflect my own non scientific results. I switched to a TYTO handle January 2019 and alternated blades (TYTO blades and havalon 60A) on 7 animals this year. I never felt like the TYTO even resembled the sharpness of the 60A blades and I pretty much broke every one of the TYTO blades that came with the handle, the TYTO blades for me did not hold their sharpness nearly as long either. TYTO blade breakage was mostly snapped sideways when I didn’t feel I was applying sideways pressure and maybe half or less on the back over the top of the blade retention slot. I either have a post or email from TYTO saying their blades are the same as the Havalon 60A blades and both my use and your testing show maybe they are similar to the 60XT blades. Bottom line is the 60A blades work extremely well for me and breaking one is almost unheard of. 3 elk, 2 antelope, 2 deer this year alternating between the two. The one other blade feature I have found advantageous is to have a taper at the back end where the cutting edge starts. On the 22XT havalon blades there is a little edge there that if caught on hide or meat will snap that blade instantly. Didn’t see the Gerber blade on your list and I can assure you it’s not worth your time. Those blades are not very sharp and dull easy. My gerber handle also wouldn’t accept other brand blades and the back half of the blade was not functional due to the retention system.