I've been testing/trying every single version of CF since 1.4, and have decided not to upgrade from that version in my car... that is, until RC 1.4 came around. Sure, it has some remaining bugs, but there are no showstoppers in the critical areas. I cannot speak for XM of NAVI, because I don't use those, but for Media, embedding apps, and plugins this thing rocks. (whereas I agree prior versions where simply unusable).
Give latest release a try, it is really worth it -- coming from someone who knows what a pain prior versions could be.