I agree. I have a 270mm Artifex and a 300mm Kono White #2. The 270 works well, but the 300 is nicer. Looking for an even longer one now
Some Suji's are VERY thin (Konosuke) and others are more robust (Moritaka, Masakage Mizu and Tojiro DP to name a few). The Artifex is thicker behind the edge, so it may hold up better with a bone hit, but I wouldn't try to slice thru bones with any suji?? What type of bones are you referring to, fish bones or cow/pig bones?? I convexed the edge of my Artifex and thinned it a little and then converted it to a wa handle, love it!