I've had ADT for about 4 years. Never had any issues . . . even with Comcast Digital Voice. And yes, it's been tested! My issue was that they kept raising the price which was NOT justified. Costs aren't going up and I'm not getting any better equipment. In case anyone is curious, your contract probably does allow termination on price increases (mine did)-- although they did offer to waive the price increases once I told them I had signed up with someone else because I had had enough of their increases!!
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