I've recently sold my Atrix and purchased another iPhone 4 and here are my reasons:
- Email, I use hotmail as my primary email account, on the iPhone 4 my PC inbox and Phone always synced with one another but on Android I had to maintain both boxes which made it useless to setup the Hotmail as a sync account on the Atrix
- keyboard, I tried the Gingerbread Keyboard, Stock Moto Keyboard and Swype and not one was close to the iPhone's keyboard
- Wifi connection would disconnect and reconnect and it got annoying sometimes it took a while to get it going.
- Proximity Sensor bug on the Atrix, if I used my bluetooth headset and then use the phone's earpiece the proximity sensor will not work at all, I would have to reboot the phone in order for it to work again.
- Voice Dial Via bluetooth is useless unless the phones screen is turned on so I need to grab my phone (while I'm driving) unlock the screen and then press my bluetooth in order for me to say the command, defeats the whole purpose of voice command and a hands free device.
- Build quality simply put the Motorola Atrix feels like it cost $30 to put together nothing compared to the feel and build of the iPhone 4.
- Browser on the iPhone is better, I was able to do more things on the iPhone than the Android and I even used Dolphin HD instead of the Native Browser on the Atrix (this is excluding flash which I never used)
-the iPhone is overall more smooth and responsive with no lag.
- Data connection speeds on the iPhone I found was a lot better
- Copy and paste on the iphone is a Breeze I find it's ackward on the Android.
- The iPhone was a plug and play and I was ready to go, Android took me over an hour just to get it the way I wanted it to be, which is a great feature for most users but I like my stuff simple.
- Netflix support on iPhone
- Youtube Player I found was better presented and laid out on the iPhone
- Random reboots are brutal, especially when you're on an important call
- Speaker volume and quality is better on the iPhone, I'm referring to the loud speakers not the earpiece, call quality on the Atrix earpiece was excellent.
- As mentioned earlier the camera and screen are better on the iPhone
- Last but not least, Peace of mind, I know if my iPhone were to crap out I can walk into an Apple store and I'm good to go, since I had an AT&T unit in Canada I doubt I would have had Motorola Supporting me if the Atrix were to crap out.
So these are my reasons. All the best with your choice. Obviously the Atrix is a good phone since it's specs made me sell my previous iPhone 4 to begin with but now that I've used the Atrix I realize that there was not that many things that the Atrix could do better than the iPhone 4 which is why I switched back.
Cheers.
- Email, I use hotmail as my primary email account, on the iPhone 4 my PC inbox and Phone always synced with one another but on Android I had to maintain both boxes which made it useless to setup the Hotmail as a sync account on the Atrix
- keyboard, I tried the Gingerbread Keyboard, Stock Moto Keyboard and Swype and not one was close to the iPhone's keyboard
- Wifi connection would disconnect and reconnect and it got annoying sometimes it took a while to get it going.
- Proximity Sensor bug on the Atrix, if I used my bluetooth headset and then use the phone's earpiece the proximity sensor will not work at all, I would have to reboot the phone in order for it to work again.
- Voice Dial Via bluetooth is useless unless the phones screen is turned on so I need to grab my phone (while I'm driving) unlock the screen and then press my bluetooth in order for me to say the command, defeats the whole purpose of voice command and a hands free device.
- Build quality simply put the Motorola Atrix feels like it cost $30 to put together nothing compared to the feel and build of the iPhone 4.
- Browser on the iPhone is better, I was able to do more things on the iPhone than the Android and I even used Dolphin HD instead of the Native Browser on the Atrix (this is excluding flash which I never used)
-the iPhone is overall more smooth and responsive with no lag.
- Data connection speeds on the iPhone I found was a lot better
- Copy and paste on the iphone is a Breeze I find it's ackward on the Android.
- The iPhone was a plug and play and I was ready to go, Android took me over an hour just to get it the way I wanted it to be, which is a great feature for most users but I like my stuff simple.
- Netflix support on iPhone
- Youtube Player I found was better presented and laid out on the iPhone
- Random reboots are brutal, especially when you're on an important call
- Speaker volume and quality is better on the iPhone, I'm referring to the loud speakers not the earpiece, call quality on the Atrix earpiece was excellent.
- As mentioned earlier the camera and screen are better on the iPhone
- Last but not least, Peace of mind, I know if my iPhone were to crap out I can walk into an Apple store and I'm good to go, since I had an AT&T unit in Canada I doubt I would have had Motorola Supporting me if the Atrix were to crap out.
So these are my reasons. All the best with your choice. Obviously the Atrix is a good phone since it's specs made me sell my previous iPhone 4 to begin with but now that I've used the Atrix I realize that there was not that many things that the Atrix could do better than the iPhone 4 which is why I switched back.
Cheers.

It's funny that all but one of the 'happy iphone users' here at work have either switched to android or are in the process of doing so.