We have an ADT with the wireless. I think it's an extra couple bucks a month. not much.
we have 4 door alarms and 3 motion sensors and I think we pay $35 a month.
I don't know what the deal for installation will be for you with ADT as when we bought it when it was free installation with Broadview (which was bought out by ADT)
APX does a lot of door to door in the historic district and i see a lot of people with their signs, but when i researched them they came up on the Rip-Off report.
I hear good things about inHouse and they're local, but when we had them out to price, our eyeballs popped out at what they were asking for.