I know for us in Southern California, a Charter-TWC union would have a near-complete grip on the cable housesholds in the region. TWC, by itself, already controls most of Los Angeles County, while Charter has some of the larger in-county suburbs like Long Beach, Pasadena, Burbank, and I believe Glendale. I can't speak for Charter, but I live in a TWC service area (but I'm a DirecTV subscriber)...it looks like TWC will be phasing-out analog cable completely by year's end, and will start issuing out DTA recievers. A couple years ago, they removed all of the basic cable networks, just left only the locals and a few other lifeline channels (public access, WGN America, and a couple others).
I like DirecTV, but I like the idea that at least with TWC, there's no contract you get stuck under for two years. However, their equipment leases are a lot more costly than DirecTV's; with DTV, not counting my programming package, I'm currently paying $17 for my whole-home HD DVR service (and that's after the $6 discount I get for my primary TV)...TWC's whole-home service is $32 a month (just for the main reciever), plus whatever you pay in programming. If you wanted to add another Whole-home box, that's an additional $32 a month, while a regular HD DVR box is just $10 extra per month.
Personally, you're probably better off buying a Tivo and get a CableCARD from the cable provider (which is about $2-3 a month, depending on the provider). Yeah, there's the monthly service fee to Tivo and you'll access to On Demand and pay-per-view with a CableCARD, but at least the Tivos, you could use the Netflix and Hulu apps (plus YouTube) to make up for it.