I was paying about $80 a month through AT&T for 450/unlimited data and text, after a 23% discount through my work as well. Through the company I work for we have a corporate website that we use where the unlimited everything plan for a single line is $50 + 15% off and I got the 5MB high speed for $20 + 15% off/month through T-Mobile. So overall I am saving $20 a month for a much faster data plan from what I have noticed and the most important part that I posted in another thread is that I actually get service in my home which I didn't before with my iPhone 5 on AT&T's network. Could be the phone that helped, but I can't really be sure. I fully understand that service in another city could be a different experience, but this is what I have noticed for me.
AT&T is a good company, I made a mistake and put my phone in the washing machine and I guess my expectations of customer service are a bit higher than most being that I work in a customer service based position. In my opinion, someone who has been a member for 13 years should get a 1-time exception for a mistake. I wasn't looking for a free phone replacement (I actually put my budget at $200), but I wasn't looking to pay $350+ taxes for an iPhone 5C with 8GB when I had an iPhone 5 32GB. I was really disappointed, and I know that it wasn't the employees, but it is the company policies that made it so that they were shackled down to give a great customer experience. So I went and had the phone restored at a great local shop and they made it a brand new phone. Because of my experience, I chose to go a different route. T-Mobile had great rates and the Galaxy S5 that I wanted, seemed like a good fit.