when I became an optimum online subscriber this is the cable modem that they gave me. I can say that I am a heavy Internet user. I download a lot of material. Usually it's in the form of high definition video. So I can easily download a terabyte in as little as a month. This modem has no problem handling all of that Internet traffic. Combine this with an excellent Linksys router, and you have the most reliable Internet set up that you can get. I guess optimum you what they were doing when they decide to use this modem is there modem for their service. I rent this modem, but I actually have looked into purchasing it and it was reasonably priced. If you ever do have trouble, which I haven't, you can easily reset the modem by just pressing the reset button in the back of it with a paperclip. This is easy to do and get your modem back to working order. The size of the modem makes it easy to place on the bookshelf. It's black so it can go with most of your other electronic equipment, most of which is now black. I guess my only issue with this modem is its lights. The modem itself looks very sleek. The lights just seemed out of the way. I'm not sure how we can improve this, but just something I was thinking about.