I've been with D* for many years and it's been quite a few since I did any upgrades, my dish has some rust on it (and my receivers have been telling me they haven't received any guide data a lot - may be a separate issue) and I don't have SWM yet, so all of that will get replaced, basically upgrading the whole system. I'm using MRV today over Ethernet today and know that will move to coax.
So it boils down to what do I use in my second room along with the Genie when upgrading. I've seen the question about speed of keeping an HR24 with the HR44 vs the C41, but my DVR's are older - I've got an HR21 and an HR22 - one of them would be replaced with the HR44 and I'd potentially keep the other or replace with C31/C41. Aside from 7 tuners vs 5 and not worrying about all of my recordings being on a single drive - which is going to be faster - the HR21/22 or the C41 client, when viewing and playing from the Genie?
The dog slowness of the two current DVR's now is just about the end for me - so the upgrade will be most welcomed.
HR21-100 and HR22-100, Sony SXRD KDS60A2000, Samsung LN40A650, Logitec 880 and almost retired Pronto TSU1000 remote - used still for the CD changer.