I had a "great deal" to sign up for XFinity triple play. After two months I was extremely unhappy that I left DirectTV. From HD quality, content, technology and everything else, DTV is light years away. A week ago DTV offered me a deal to come back which included free installation, equipment, and up to 200 hundred dollars if I am charged an early termination fee from Comcast. I jumped on it in a minute. Yes, I am into another two year contract with DTV, but I could not be happier. At least for me I learned my lesson, and I plan to be staying with DTV for a long time.
One thing to be aware of, I was on the Entertainment plan when I left, and when I came back they moved channels out of that package, and I needed to get into the "choice" plan in order to get those channels. After the promotional I will be paying about 10 dollars more than I was before I left them. The positive news is I got an HR-44 and mini Genies, which is far better then the equipment I had before I left, so I would say it is a pretty even trade.
My only suggestion is go to a lot of sites to see reviews of Charter. Also, compare the selections they have. For example Comcast only has one HBO that is in HD. the rest are in SD. In order to view the other HBO HD channel content you have to use their "On Demand" feature, which I felt the ON Demand HD was not that great. Another thing which I didn't like is time zones were messed up. AMC was set for West Coast time, the HBO was set for East Coast time, and the news channels had the same inconsistency.
In other words, if you can, don't disconnect DTV until you have Charter installed and try it for a week to make sure it is what you expect.