Buck, you have broken the silent rule here, we don't compare super powers, This is like, Russia vs. the USA in the 80's. I beleive the term at the time was "detante"
OK, I have not skied the 8's but did own the SC's and Gary will chime in I hope. As said above, these two skis are perhaps the best skis on the front side ever; No doubt. I will not say that erither is better because its not a mater of better, its a matter of which you like better. This sounds diplomatic but its the truth. The SS in a 170 is a Ferrari, its a stiff, technical ski that is not forgiving and with the vert walls is very precise, its not a skidding ski and do not get caught in the backseat. That said,, its amazingly versitile, super fast edge to edge but can make medium and long turns without fighting you like Metron B5 does. Read my review in the Head section on both the SS (and 82 for that matter- also note I wrote both reviews before Peters reviews). Some my differ but I will say the SS is a more demanding technical ski. The 8 is a bit more fun oriented but not less capable.
The 8's I will leave up to others but it is another fantastic ski.