Here's why *I* would. I have them on different TV's now- but having them both in one room has been tempting.
My boxes can record 2 show at once. There are more than 2 networks competing for my eyes- so they all try to put their best stuff on at the same time. Now they've begun to just run shows over for 1 minute so it interferes with the next show on another network.
2 receivers let me record 4 shows at once while I watch something recorded earlier.Jim