We have finally replaced the last sd tv in our home. We currently have a 722 w/Sling(leased), a 612 (leased), and a 512 (purchased). I am wondering what the best option, simply replace the 512 with another 612 or similar model, or switch to the hopper with 2 joeys? What would the difference in the monthly fees be, etc. As it stands now we are already paying $27 a month in dvr/receiver fees. Both the 722 and 612 are connected to ota which from what i have seen is an issue with the hopper? I would hate to lose that option. Any info/input is appreciated.