Just replaced 2 Tivo HDs with a Premiere XL4 and a Premiere and added a Tivo Stream. Took me about 2 hours to get everything set up and running properly and then I started what I thought would be a painful experience to get the cable cards activated. 15 minutes on the phone and all was complete with both Tivos working properly. I was shocked. In the past this has taken hours if not days with a Tech having to come to get it working. Great experience with Comcast getting them up and running so easily and quickly.