Am assuming white will be popular - just hoping the 64gb is less popular!
The guy in the O2 store I spoke to said that the cheaper the phone, the quicker they sold out. So, I'd imagine that white 16gb will be the first to run out. 64gb has quite a price premium, so hopefully that will put most people off.
I'm still quite confident that I will be able to get one - I think getting there for about 6.30am will be early enough. I may not be first in the store, but don't mind so long as I get one.
My 3GS will be sold as soon as my new phone is set up. Mazuma mobile were giving more than O2recycle by the way...