[Gogar]

Search as above, and also search to find

The # of "downstream" and "upstream" channels available in your area and choose a modem that can handle at least as many downstream channels as are available on your cable. Also allow for future growth if you can.

I have an arris 6190 that can do 32 down and 8 up,

my current Comcast cable gets me 28 downstream and 4 upstream channels, and they add more as demand grows (hopefully.)

This is just the 'width' of the freeway to your modem, unrelated to the router 'channels' you mention.