Kono HD 240mm Funayuki: http://www.chefknivestogo.com/kohd240gynew.html
Funayuki in this case refers to the blade profile, not the single bevel grind. These are double bevel with a pointier tip and flatter edge profile.
Kohetsu 240mm: http://www.chefknivestogo.com/rikoaosu24gy.html
If you can wait till it arrives, I have the 210mm and it's awesome! Very very lightweight, but they nailed the grind and HT, I would say it performs on par with the Konosuke HH/HD/White #2 in terms of cutting performance. Mine has held it's edge nicely, no chipping and not to bad to sharpen, either. The exposed carbon steel at the edge will patina, but it's not too bad to deal with compared to a full carbon blade.
Sakai Yasuke Swedish Stainless: http://www.chefknivestogo.com/yusuke.html
4.9oz...very very light!!
Masakage lines seem to get good reviews, and I am guessing it would be fairly light weight as well compared to you other knives.