How do you know 'they have always given the correct dates as far as Nokia has told them'? Do you know what Nokia has told them? How do you know that Nokia didn't tell Amazon the 2nd Nov?

I don't see any benefit in switching from one supplier to another unless I can be sure I'll still be in the first batch of dispatches. I have no experience of shopping with them: what is their customer service like? How do they respond to returns? What if the device has a hardware fault and needs to go back? Those were my reasons for choosing Amazon.