The King cages are about as good as you could hope for, at least in terms of functionality and quality. I've got them on my Raleigh Team...
On my Borthwick, I've got some Trek branded cages. I think these were modeled on some Nitto cages, perhaps. They work fine. Of course, I bought them probably 15 years ago, so you'd probably have to find them on eb*y or something.
Steve in Peoria