after thoroughly go over the product review for both this modem and the sb6120 ; see the nearly equal split of trouble people be report with Comcast , I call Comcast before I order it . I be have trouble with my own , older DOCSIS 2 modem -lrb- a Toshiba PCX 2600 -rrb- of nearly 8 year strong -lrb- intermittent signal drop -rrb- , and figure it be time to upgrade anyway . Comcast -lrb- I be in the ` burb of Atlanta -rrb- come out because they be see the drop from they end , and in a surprisingly proactive effort , decide to not rule out the old modem right away . instead they work out some very minor noise issue on the line locally first , then find some more significant issue up the street and have to have a linesman tech come out . again , the one primary tech give I he cell number to stay in touch with over the course of the next two day , come back out and after they feel they have do everything and like what they be see , then they suggest replace the modem . the drop be much less than what they be , but still occur . I order this modem , it arrive as expect and call Comcast to provision it . take about 15 minute on the phone and it be online . I get the same up\/down speed and ping I have with my old modem of 30d\/4u mbp . overall I be happy with the quality of the product . it be a little gray , warm plastic box with pretty bright light sit in my equipment rack . to those out there worry about the heat thing I read in the other review , this be a non-issue . Mine run cooler than a freshly pour cup of coffee be feel though a ceramic mug that have not quite heat up -lrb- do that make sense ? -rrb- . in other word mine be barely warm to the touch , so I be not sure why people be knock it for that . in summary : Atlanta Comcast user should have no problem with this modem , just make sure Comcast verify you line be clean and you should be good to go with it .