How are you certain that you will be getting HR24's? D* will not specify which equipment you will get. I believe you will get whatever the installer has in stock. Are you purchasing them from another source?
I went with a local installer. I get all the same deals as D* is officially showing on their web site, but this outfit has been recommended to me by several people and the quality of their work apparently sets tehm apart. They also don't charge for service calls. They make MOST of their money on repeat customers as they sell TVs at prices that compete with the big box stores, they service what they sell. AND..... I worked with the owner's cousin about 20 years ago