I've been a big fan of Channels DVR ever since discovering it about 4 years ago. When I first started I bought a HDHR Quatro to use with the old antenna that has been in the attic of this house for 40+ years and still works great.
Then I bought an HDHR Prime to use with a Comcast CableCard. I was already familiar with CableCards due to having two Tivo Roamio Pros. For quite a while, I thought the 3 tuners of one Prime would be enough since I could also use TVE Comcast to catch recordings when I ran out of tuners.
As time went by, I turned off most Comcast TVE channels accept for about 10 HD channels available with TVE and not with QAM CableCards.
Then about 2 months ago I bought a second HDHR Prime on eBay for about $20 and ordered another Comcast CableCard to go with it. Once I received the new card it took about a week to find someone at Comcast to activate and pair it. Now, I was up and running with 6 cable tuners in Channels and found that to be a good number but still ran into the quite a few conflicts since I tend to extend games and other live events.
So a few weeks later I ordered another cheap HDHR Prime off eBay for about $20, and headed over to the Comcast_Xfinity subreddit to order another cablecard. I figured I better get it now since they are still giving them out. I received the latest card last week and just a few hours ago had luck getting it activated after nearly a week of trying.
Now, I have all three HDHR Primes set up with my Channels DVR server, and having 9 cable tuners in Channels is awesome so far. I really think using CableCard HDHRs is my favorite part of Channels.
I'm really going to miss using CableCards someday when Comcast decides to stop supporting them and providing them. Hopefully, Comcast supports the cards for at least a couple more years at least.
Anyone else here use multiple HDHR Primes with Channels?