I'd love to know what Nokia phone you were using.
My last 4 phones (N70, N6680, N6600, N7650) were all Nokias, and none of them were even remotely as responsive as my iPhone. I'm thrilled to see the back of them.
A nokia 6310i. It was great, I could make a phone call on a phone, without any lag or crashes and it had a battery life of about a week.
I know its an old phone and its not really comparative to an iphone in form or function, but I'm just so disappointed in the current software for the iphone. Its like when you know something could be great, but the details are muddying the overall quality.