blends are far from the softest.
10/11 kung fujas is BY FAR the softest of the three skis. The S3 follows that (still soft in the tip and tail, medium underfoot) followed by the blend (soft tip and tail, medium-stiff underfoot).
You can't go wrong with any of the three, I prefer the blends of the bunch though. The 09/10 Kung Fujas was one of my favorite skis and they (imo) butchered it for this season. The S3 is going to be the middle ground and will do everything admirably, but the stability from the Blends kills it everywhere.