I've heard all four at different points in time... And even then, a thousand variations of each. I use to get caught up in the whole "gimme full frame" thing, but since I now have one I've settled down. I've realized that a camera is just a tool and the actual need for FF takes on a much different face once a person has one (in other words, I use to think I wanted FF for shallow DOF, better high ISO, etc., but now it's for a whole different set of reasons).
Don't get me wrong though, I'd still love to see a small, minimalist Pentax FF DSLR with a whopper OVF in a body similar to some of the old film cameras... Maybe even forego AF, and I'd just run a 50mm on it, and I bet nobody could pry that thing from around my neck!