Unfortunately Comcast is also xfinity and a few others. We purchased our s&b in May. Since Verizon does not have the best signal here we went with xfinity of tv and internet. Internet speeds is up to 350 mb/sec. this is after a router update. I have no issues with their service and the tech I talked to last week about upgrading my service was very honest. He told me not to bother as I wouldn’t gain anything. With tv on mostly all day ( we have a 2 yo granddaughter living with us), SIL doing collage courses on line, daughter doing online medical clinic 2 days per week and me on the internet a lot, we haven’t even gotten close to our limit. The closest was a little over 800 in one month. 1.2 tub is a lot for a residential user. You would have a hard time using that consistently unless you were running an internet related business.