Comcast keeps pestering me to change my cable modem I bought from Docsis 2.0 to 3.0. From my quick research, I don't think I would see a benefit unless I also change my plan and my wireless router from a g to an n in addition to my cable modem. This will help Comcast on it's operation side but I don't think that will translate into savings to me. Anyone else make the change and notice the speed difference?