As if I weren't feeling indecisive enough, I came across a couple more pages of Pinwheels.
Stitch Marker, who is one of the authors of Knitalong, has this page, and this gallery which leads to other blogs.
I've also realized that if I'm going to increase the number of stitches by very much, I'll have to make a serious effort to find my 60" circ.
ADDED: And as Martin, the other author of Knitalong, has pointed out, there's the Flickr group too. I may never make up my mind.