I’m going to dissent with Comcast being the better choice. There have been outages with both services, sure (although my Comcast TV has gone out while my Centurylink internet keeps ticking). I also had a frustrating fiber install experience with Centurylink where appointments kept getting pushed back and it took me a while to figure out the appropriate vlan settings to get rid of the “modem rental”.
At the same time, I’ve got internet-only Centurylink’s 40 mbit service for $36.94 this month and for the next ~two years. Except for youtube taking longer to buffer before playing, I’m happy with this price point.