Few months ago the promotional U-Verse period ended for me. Was thinking of going back to cable (NOOOOOOOOOOOOOOO!) to see if I could get a better deal. Then looked into Dish ... then into Sling.
Sling sounds great if you have only one TV/device you want to watch at a time ... but if you want to watch more than one, you have to have additional accounts. Further, you can't get regional sports networks (e.g., Foxsports Southwest, which is 95% of my summer viewing). As I understand it there is also limited record/pause/fastforward functionality. So, tempting, but not good enough.
Right now, with what I watch and want to watch, I will probably simply take the U-Verse thrashing ($100+ a month) I am getting. I may try the "I want to cancel because I am cutting the cord ..." to see if I can get any reduction, but it will be a hollow threat.