TWC-SA has the most HD channels (IIRC) of any TWC area in the country because they're doing everything they can to combat the U-verse push.
I switched over from DirecTV (suspended my acct for now) to uverse the beginning of may. I've had quite a few issues from stupid technicians but the service itself is fine. I have had to have to main STB replaced (bad HD). There have been good and bad things but I believe the bad things were one-time issue type things to get the system set up properly. I'll keep it until at least Halloween and if I'm unhappy with my 6 months, I'll cancel and restart my directv.
Someone mentioned the recording HD while watching HD... Austin had the second HD stream turned on a few weeks ago and SA should be right around the corner if it hasn't been turned on already. I think the make or break is the whole home DVR set up where there is only the one main DVR in the house but then any box in the house will be able to access that one master DVR - last I heard was this was coming early fall.
One small thing I found recently - I've always hated switching services or receivers with the DVR's in them because you have to reschedule all of the recording stuff - so when I was having my uverse one replaced, I wrote down all of the shows set on the DVR, etc... once the new box was installed, I went to add the shows back to the recording list and everything was there already - with uverse, the DVR scheduling/requests/etc are all connected to your acct, not the box/HD itself, so I didn't have to touch a thing. As small and anal as it sounds, it's was huge because I won't have to worry about adding back all of the shows in the fall when they return.
Anyway - that's been my experience. The customer service has sucked on some occasions and we've had issues due to incompetent installers, but now we've called so much we automatically get taken to the upper levels of support and everything have smoothed out (plus all of those one time install problems are fixed).