T.R.
I have ADT and very satisfied with the service. I think they are a few dollars more, but I felt more comfortable going with a highly reputable company, rather than a mediocre one. I called on one company that offered a cheap price, and the way they handled the call and appointment was not very organized or professional (can't remember the name, sorry). But, ADT gets kudos from me and I feel very safe! :) Good Luck!