Don't go with Apex/Vivint
These people are unbelievable.They don't send you notice that the account is going to be renewed, don't tell you how to cancel the account, but graciously offer to install a new system into your new house if you move.
They claim there is no way to cancel a renewed contract without paying the full amount owed. The fine print must be really freakin' small...Whatever you do, stay far far away from these people.
I'm still in the process of trying to cancel.They have offered me a 10% discount in the "cancellation fee"...how kind and benevolent of them...