I would certainly recommend sticking with a model shown on their compatibility page, mostly because they are responsible for firmware updates and will only do so for models currently on the list. My model dropped off the list a few months back and they notified me that I would need to change it because it was no longer being supported by Motorola/Arris. When I called last week regarding a problem with my TV, they refused to help me until I got a new modem (which obviously has nothing to do with my cable TV service). I went ahead and swapped it for a Motorola SB8600 anyway, because I had upgraded to gig internet (at a cost savings) and I could tell my Internet had become flaky.