Unless you have too much money and don't know how to spend go buy one and play with it. If not you can get other Android phones with better features and cheaper. The Siri is a good invention but it is actually useless.
Siri is really good but I don't like talk always with siri when I am with friends. the battery issue with iPhone 4S is still not clear. I will simply say if you have older iPhone 3GS or iPhone 4 than wait for iPhone 5.
I honestly want to point out that Apple really has less functionality compared to Samsung S2 and S3 but heyy, I really don't care that much because all I know is that the Iphone is the status symbol of this 21st century. I REALLY DON'T CARE IF IT IS A LITTLE EXPENSIVE. STATUS SYMBOL RULESS. GO APPLE!!
I have been using iPhone 4S because it is having one of the best features in the market of mobile phone and provide us access number of applications from iTumes. 4S provides the pinpoint most densed pixel display and other featured like Siri. Do agree it is bit slow but we always have to sacrifice something for something. In this case speed for features and applications.
Well what i do is i double tap the home button, touch and hold an app on the bottom of the screen and then close ALL the apps open. Don't worry it doesn't get rid of the apps but that should speed up the phone after you restart it when your done closing all the apps!
Siri on iPhone 4S lets you use your voice to send messages, schedule meetings, place phone calls, and more. Ask Siri to do things just by talking the way you talk. Siri understands what you say, knows what you mean, and even talks back. Siri is so easy to use and does so much, you’ll keep finding more and more ways to use it.