This demo shows how to set various radio buttons in next release of Ionic (v0.9.21). Please let me know what you think:
Thanks Adam. It looks like this solves the issues I was having. I added a bit to the Codepen to log when the client side choices changed. All seems good.
Thanks so much!
updated for new ion- directives in lastest release of ionic 9.25
see http://codepen.io/anon/pen/gfqtB