I had the cable-co-provided Netgear somethig-or-another. It would hang every couple of days. Sometimes it spontaneously recovered, other times it needed a power cycle.
The company sent out a tech with a new one. It froze even more often.
Their phone service folk said, with a straight face, that this type of behavior was normal.
We gave it back and picked up a separate cable modem and
802.11 base. Saved the monthly fee (more than paid for itself already) and it's only needed one reset (which may have been courtesy of hiccuping when coming back after a power failure).
In other words, unless things have dramatically improved, I'd stay away from integrated units.