The clients actually provide fewer tuners in your case. They are effectively just mirrors of one of the tuners in the main Genie unit. But they still cost the $7/month. It uses one of the Genie tuners to record and everything. The only benefit that I can see to the client is if you have an AM21 OTA unit attached, it will bring those channels to each TV and you won't have to have a separate AM21 at each location. That is IT. You will be MUCH better off with a HR44 or HR54 and keeping your HR24s. The interface differences people are talking about aren't really that significant, but they are there. They give you a new remote with the Genie unit, too. If you hate it, the old remote will still work for the new unit in IR mode. I have been doing that for many years. The new one is tiny and has tiny and cumbersome buttons. I also like the old remote because it also controls my TV and AVR quite well and the new ones do not. Note: A client is the only way to get 4K, but I am assuming you are not looking into 4K as you did not mention it. To get 4K, you must get a HR54 and replace the receiver at the 4K TV with the 4K client. You can also get a HS17 server and every TV will have a client. I wouldn't do that in a million years.