I be use the older iteration of this modem for many year and suddenly this past summer a hurricane name Irine hit the east coast and cause power outages\/spikes and all sort of disaster . : -rrb- - the old modem be kill . I use this with Comcast Docsis 3.0 service in the central NJ area and it could not be better . the old modem require reset and have issue with upload speed usually once or twice every few month . once I get this modem , I call Comcast , they verify that the modem be support , take the serial number\/mac address and provision it . I be get excellent speed both download and upload - download be generally 55mbps plus and upload be generally 6-10mbps ... yep that be the tier I pay for . I have not have any issue with upload speed drop down and there have be 0 necessity to reboot the modem to date . my recommendation - if you be switch to Docsis 3 and need a new modem - then buy this . also - if you be a cable internet subscriber then stop pay to rent a modem and buy you own ... the savings in the rent alone will pay for this modem and you will own it . 5\/5 in my opinion .