with Mac it's not just about the feature on the individual device. Do you own any of the iPad, Mac, iPod, Apple TV etc etc ? They all work together seamlessly with the new iCloud service from iOS5. That's one thing that no other device can offer you.
if u feel bored with ios, it is good to switch to galaxy S2 as it is thinner, faster, lighter and bigger then iphone4. u can have fun customizing android and roms
if u want to get iphone4s, i will wait for iphone5 cos i think iphone4s will last half more yr...
yes peter, as an islave, u should bundle urself to all apple products in order to use iCloud.
iCloud is simply a backup system that sync all files automatically to the internet storage.. for android, you can use app like Dropbox or SugarSync
google's definition of Cloud = a web browser that replace all software on ur computer. applications that run on the cloud. so.. u can access and work with them anywhere with any devices/pc
I would wait until the Samsung's "Unpack" event on Oct 11, they are announcing the new phone, possibly the Nexus Prime! I can't wait.
Rumors says Google might announce the Ice Cream Sandwich. (I think they should, as Apple is taking a chance as Google will announce the next generation OS, hardware while they are pushing the iPhone 4S)