Of the criticisms posted most of which I either don't agree with, or feel you have to use it first to decide, this fact to me is a limitation that might not sit well. While I don't think that many families will find they need three TV's watching three live shows and also want to record, it does go back to my hesitation, that you don't have at least one other receiver on the system. That would give you a backup and allow at least one more tuner for recording. I will point out however when the OTA USB is available that will be another tuner, and if during prime time, four programs are recording with two (or three with OTA) tuners available. Also most all channels not including the Four Networks repeat shows at various times including within a couple of hours of the orginal airing. Movie channels such as HBO have numerous times of catching a show or movie even just with just the East and West feed. So with the four networks able to record at the same time, this may not be as big a limitation as it first appears.
A solution would be to pay $7 more a month for a second Hopper, adding three (or four) more tuners, once the software is available for the Hoppers to be integrated. But it appears you would have pay a one time charge for it also.