I would vote for the painteds over the doublebars, though I love the doublebars. The painteds are awesome builders....
Or another solution: get painteds and build a new aviary for the doublebars.

(time and money permitting, of course).
Do you have anything in with the Gouldians now? And how big is the space they are in? Then we can be even more opinionated about your birds.
(btw, just noticed we are still in a topic called 'zebra'. Perhaps start a new thread? I don't know, I'm an old luddite technophobe fart. I didn't even know you could make someone a friend....)
Avid amateur aviculturalist; I keep mostly australian and foreign finches.
The art is long, the life so short; the critical moment is fleeting and experience can be misleading, crisis is difficult....... (Hippocrates)