$60 for unlimited data? Even if this is before taxes it sounds like a great deal! I end up paying over $60 for my Verizon service right now (450 peak minutes/
no data/500 sms/asurion). Contract not over until March 2008...

I'm guessing you could get around the 200 sms limit without spending a dime by sending emails to people's phones.
I do not consider $60 for unlimited EGPRS (EDGE) to be any deal at all! You can get unlimited 3G from Cingular/at&t for that, which you obviously will NOT get from the iPhone!
For EDGE access I am paying $20 on one device and $29.99 on the other for unlimited data (that is internet, email, sms, and also the built in AIM, Yahoo, MSN messengers)