I care about twin scroll. The reason is because all I have heard is how previous version STi have poor low rpm performance. The new JDM twin scroll has received a lot of praise. That's what I wanted - drivability. It just seems to me that the 2.0 ts turbo will give that better than a 2.5 turbo. We shall see. I hope to read some reviews of the drivability soon. :-?