I'm wondering if switching from the Samsung Galaxy S 2 Skyrocket to the Iphone 4s is worth the trade. From some the the things I have read online it seems like there are not that many differences between the two other than Siri, the size of the screen, and the operating systems.
You should consider reading Apple iPhone 4S reviews here in the Cell Phones Etc. website. Such reviews can give you the idea how good the iPhone 4S is and if it's good enough to replace your current phone.