So I have a CM1000 and works great. I ordered a CM1200 so the question is any sense in upgrading? I have a gigabit connection so cant really take advantage of 2gb with the 1200. Any reason to keep it over the cm1000?
Other then LAG support and additional WAN ports, the CM1200 is similar in chip set base which is Broadcom and if you can't take advantage of having additional separate WAN IPs from your ISP then you'll be fine with keeping the CM1000.
