unislick: sorry to highjack your post!
Im looking at a HR34 and 3xHD receivers, but I have a 5th room I want to add a receiver at a later date. Im worried that if they put in SWM8 then I will have to replace the switch to add the additional receiver, but selecting that 5th receiver at purchase, the only free one is a SD receiver. So if I select that they would have to go SWM16 right? But then the SD wont communicate with the HR34? So to get communication with HR34, I would have to pay $99 extra for 5th to get a HD receiver?
Do I have that right? Suggestions?