I love the way my iPhone 4 looks, but I'd prefer it to have the back like an iPad. Although, whether or not I buy the new iPhone will be based on performance, not the way it looks.
With that said, if the iOS 5 performs well enough on the iPhone 4 I would need something more than just RAM and processor increases. HSPA+ support would do it for me. The camera would be an added bonus, but not enough alone to push me.
With that said, if the iOS 5 performs well enough on the iPhone 4 I would need something more than just RAM and processor increases. HSPA+ support would do it for me. The camera would be an added bonus, but not enough alone to push me.