Well, first of all, your GT/CS, Arlie, is GORGEOUS!!
The ten spokes, especially if they are polished definately speak "Shelby". It will lean the look of your CS towards the "Little Red" look. For people on the street, it will further convince them of your car being a Shelby Coupe. I personally love those wheels.
The SSW, in chrome, look nice,too. They are very nice wheels, and they are on my CS, too. The chrome looks great on the road. It gives the car a real Mustang Class look. If you want to go with a Mustang look, go with the SSW. If your GT/CS is also a GT, I'd go with the SSW and the GT caps, to express the rarity of the GT option...
The GT/CS is the only Mustang where you can go either way--in a heritage kind of way, since it's 1/2 Shelby. The 15" wheels do have a bigger stance, and a little more impressive in that way.
It's a tough decision. More of a personal choice. It depends on which message you want to express-- Shelby or Mustang?
Paul N.