In my experience Cable Providers have only slightly better PQ than U-verse, and both are far behind Dish and DirecTV.
Your experience is incorrect and/or biased because the technical specs just don't back that up.
Most cable providers are using MPEG-2 and packing 3 HDs to a QAM resulting in an effective bitrate of 12-14 Mbps on most of their channel lineup; in addition, they typically pass through the local affiliates untouched. Some channels uplinked as MPEG-2 they can pass through untouched because their bitrates are sufficiently low enough and they've been designed for cable providers to pack them 3 to a QAM.
DirecTV and Dish Network on the other hand, re-encode everything on their channel lineup to H.264 @ ~4-6 Mbps. This is an incredibly low bitrate and the definition of bitrate starvation. Dish Network adds an additional quality ruining step of down-rezzing 1920x1080i channels to 1440x1080i in the process.
AT&T actually seems to be using similar bitrates for their HD channels but for some reason they just look like pure ass. They must have incompetents running them with sub-optimal settings because I don't see why they should look worse than DirecTV but they do.
Directv charges $10/month for dvr service, Charter charges $20. With MRV included, it's $13/month for Directv. Are you saying there is no charge per month for the clients?
He's saying that a CableCARD costs $2 a month to rent from the cable company and it can power a CableCARD tuner with six tuners like the Ceton InfiniTV 6.
One can then use Xbox 360s or Ceton Echos in other rooms to act as media center extenders for no additional monthly fee and they act like a DVR or a receiver only better.
You can save hundreds of dollars a year in equipment rental fees by using CableCARD tuners and media center extenders.
I love that guide. I do not understand about using Roku or Windows whatever that is - can anyone get that?
Windows 7 or Windows 8 both have Windows Media Center and the CableCARD tuner support is a free add-on. All you have to do is buy a CableCARD tuner and then run the Digital Cable Advisor plug-in in Windows Media Center.