You talking about that Soloist body? I agree that isn't the best example of Koa I've ever seen, and the Satin finish isn't doing it any favors. However, you have to keep in mind you're looking at a showcase that is about a fifth of it's normal size. Ordinarily there would be many more Koa tops in there, and you would have a better representation of what the range of standard Koa looks like.
And that's the thing: Koa varies A LOT in appearance compared to something like Flame Maple. For that reason, I would always go Unique Choice with it. That's not to say the standard Koa is sub-par in any way. Just that with Koa and certain other woods (Zebrawood, Walnut, Pau Ferro, e.g.), I would always want to see them first.