Thanks for the good article. I think ATT's prepaid plans are getting better (more competitive).
We just bought 2 iPhone 6 for $244 including $45 prepaid card for first month, that's an iPhone 6 for $199. The selected plan on each was 6GB for $45, but with auto pay we got $5 off each line, and with multiline feature got $10 more discount on both lines. After all those adjustments we ended up with $5 credit to be applied for next month, and the total monthly will be $70 a month.
We had T-Mobile for many years, but now that they acquired more customers they are getting more expensive, so we cancelled the lines to go to ATT. IMHO T-Mobile is not the bargain company it used to be.