I just went through this entire thread, more or less, and people keep asking the same exact questions after a while. Is it possible to edit the original post to update it with a sort of FAQ of stuff that's already been answered? That'd be helpful!
I live in Switzerland but am preordering a 4S 32GB as soon as it goes up. My sister moved to London a couple weeks ago and I'm simply ordering it as a "gift" to her address in London, which is perfectly possible apparently. Then I'm visiting her to pick it up.
I have a 32GB iPhone 4 right now. I think the upgrades are absolutely worth the upgrade, especially if you love and use your iPhone as much as I do. The only thing is.. 64GB, worth it? I don't see what for... I never even managed to fill 32GB.