I have the silk roads on my car right now. I love them, but i also went through the same dilemma. The Kei Office C/O's have 7/6 rates, Silk Road C/O's are 8/6. Since the Silk's are stiffer in the front the would technically tend to be more understeering, but i must say that my car oversteers a LOT. If you still want more oversteer you can always put a rear sway bar on. Silk Roads are very top notch.

 

i have silk roads on my S14.
installed them about a month ago.
driving has never been more enjoyable.
they are 8/7 for S14s