Any of you have XFinity? I have had ATT Uverse for several years now and am getting more than fed up with poor wireless performance and all too often jittery Hi-def TV. They replaced the modem 3 times and it is better but still has to be reset a couple times a week. It drops wireless connections several times a day and goes thru periods of less than 100kbs per second standing 2 feet away from the modem. WHo here has XFinity? Thanks ahead of time.