Have to use MotoBlur?
MotoBlur is an integral part of the phone'sÂ OS. Some people have botched the MotoBlur sign-up by not being in a 3G area when they initially setup the phone. This denies them access to many of the MotoBlur functions. But I don't know if if there is any way to make sure you bypass the MotoBlur setup.
The smartphone data plan is $30/month. You can get a feature phone and sign up for the unlimited family texting plan to cover all of the phones on your account ($30/mo) and then get unlimited data for $10/month.
By the way you do not have to have any data plan with AT&T if you have an unlocked smartphone. I have a Nokia e71 and do not have a data plan. I just use Wifi.