first i'd like to say a busse clan khukri would be the worlds greatest fixed blade, deposing the battle mistress.
second, i'd like to say that being sr77 or infi won't really make a kurki much better than a him imp. not worth the premium in price, though i'd still buy it.
what will make em better and worth it? ResC grip. make it a scrapper.
18", i don't care how thick or thin. could be machete thin, fine by me.