I moved from AT Top 200 to Flex Pack and love saving $40 per month over what I was paying before making the move. I explored the OTA module for my 722k to save another $12 a month on top of that but the indoor antennas I tried didn't do the job for me (especially in rainy weather)
When there is something I want to watch on ESPN, I add that pack and as long as I watch or record it within the same day, there's no charge. And when there is a charge, it's pro-rated to something like $0.38 per day. When there are Free Previews, we get those including HBO where we can binge on shows on-demand.
Flex Pack is a great deal and gives us everything we want at a reasonable cost.