Apple iPhone 4 (CDMA)

I've used all three Operating Systems quite a bit now. Here's what I have to say.

Order of how I rate it (other ratings below)

1: Android - This is at the top, only because it has the widest scope. Many devices run this OS, and they can all access most of all the same apps on the market. Which is huge. Operation is reasonably easy once you get used to it. However, Android apps rely on the OS to shut them down and not the user pushing an "Exit" button, which every app should have in its menus. Third party task managers can help sometimes, but often kill system services that are needed for proper operation. It does have a wicked fast browser and can do Flash Player.

2: webOS - This is here for simplicity's sake. It does have a small app market (which is 3x bigger than Blackberry ironically), and only the latest version 2.1 has all the useful features, but the flow and operation of the OS is to die for. A quick flick will let you multitask, task switch, and close apps, without digging in setup menus or third party apps. For speedtasking, this is the winner. However, it only runs on the Palm Pre Plus, Pre2, and Pre3, and some HP tablet PCs. And the Pre design isn't the best.

3: iOS - Apple's mighty OS for the iPhone and iPad. It's fast, easy to learn, and very polished. It has the biggest app market of all, and everyone swears by it. However, that said, it does have its drawbacks. Some features used in other OS are not here. Also, task management requires lots of button dancing, turning the fluid interface into a skippity hoppity experience.

Order of ease of operation

1: webOS
2: iOS
3: Android

Order of apphappiness

1: iOS
2: Android
3: webOS

Order of functionality

1: Android
2: iOS
3: webOS* May change with WebOS 2.2

Of course, you will choose an iPhone if everything else is Apple and you want the complete set...