Hey Mod, I have the same internet speed package from Comcast as you and was wondering if this modem works for ALL Comcast customers (I'm from NJ). I just got a new modem installed yesterday (ARRIS TG1682G) and it has been giving me outrageous spikes and latency/jitter. My old modem was a Technicolor tc8305c and didn't give me any spikes whatsoever. I only upgraded because it was a free upgrade on Comcast. Their tech guy is coming here tomorrow to work on my line because he saw an issue that could be causing the latency I'm getting. However, if I notice the problem continues to happen after he's done working on it, it's going to be pretty obvious that it's the modem which is causing it. If that's the case, I'd like to check out this TP-Link modem you're talking about. Do you know if this TP-Link is compatible with all Comcast customers who have 240/12 speeds?