According to ASCI's 2014 poll of Internet Service Providers (see coverage by Ars
), Time Warner had the lowest satisfaction of all broadband companies (54% and dropping faster than any other company). Comcast was 2nd-worst (57% and dropping 2nd-fastest), and Charter was 3rd-worst (and dropping 3rd fastest). So, this may lessen Time Warner's decline.
Personally, I have used both companies for coax services in the DFW area, and I prefer Charter. Business services are similar, but Charter is much cheaper (currently $40/mo promo for 60M/4M versus Time Warner at over $300/mo for 50M/5M). Time Warner's aging infrastructure in Dallas definitely does not warrant the premium. Plus, Charter service is no-contract.