whats best cable modem to pair with new apple extreme 802.11 ac
i have old motorola sb6121 paired with new apple extreme 802.11ac that i bought yesterday and after 12 hours of trying everything i keep getting disconnected every few seconds.. i have read all relevant post and tried all to get to play nice.. when i get signal its over 85mbps because I'm paying for comcast blast. i want a new modem and would like to know what is recommended.. i see zoom 5141j is recommended but i see zoom has new 16x4 cable modem.. would it be to my advantage to go with 16x4 vx 8x4 channels when pairing with extreme? thanks
iMac, iOS 9.2.1, latest El capitan os