They have changed their tires a lot over the years.
If the KO3 does in fact replace the KO2 across the board... I won't be aspiring for a set. I much prefer the timeless almost retro treadpattern of the pre-KO3. They kinda buggered up the sidwalls a little with the KO2 but for the KO3 all it has going for it is the solid white letter tires over other options... and in my size that isn't particularly special.
Now if you want a tire that has been made the same for decades
@Jim Oaks so it really must be awesome... Thornbirds.