I have used all and own all (Nexus S, Samsung Focus, iPhone3G (4S through wife) and I am currently on Samsung Focus) and now I am moving back to iPhone. Lot of minor annoyances in the OS. Part of the issue is that more devs (web and native) focus on Android and iPhone and so either the web experience is bad or the native app does not exist.
As an OS I prefer Android (the pure Google version), but I do not have any devices that match the build quality of iPhone.
I will but it is blocked at my work so will need to do when I have time at home.
You may want to post in the Lounge too, I think last time we had PoH and Nagy amongst others, although maybe tomorrow as now is nearly 5pm here so most will have gone home and the Americans are starting to turn up. Around about CCC time would be best.