I have an issue with XFINITY recording, if I go to a channel and a program has started, it does not record from the beginning like my Gateway system did. Also, the replay sometime freezes up or looses the voices and you have rewind to make it work. Sometimes the program does not fully record if it goes beyond its normal time.
Nor does the new XFINITY box hold the channel you are on if you want to check a game score, you loose the time away from the channel. Gateway did not loose the channel.