for that price, I would go with a set of Tein SS simply because i can adjust the adjust the shock dampening where with the Apexi WS, you cannot, only the Apexi N1. About the Upper Pillow Mounts, that's the piece that caps the top of the springs and mounts on the shock towers. Apexi makes it with their own mounts for better response, but its optional and you can use your stock ones.