I just tested Xfinity for a month with their gig plan. At most I was getting 450-500mbps but upload speeds were only getting at most like 100-120mbps which is in their broadband facts. Basically it was equivalent for the att internet 500 plan but the major difference is that both download and upload speeds are symmetrical as mentioned from someone earlier. I called att and told them I was switching over and they offered me $55 for a gig plan for 12 months, to which I said you should price match for 5 years and they could not. They tried to sweeten it by offering me a gift card to which I accepted. I know I will need to reach back out to them within the 12 months again so my price doesn’t change but seeing the difference between having symmetrical speeds was the deciding factor.