Home Security Cameras

I've installed 3 systems, one wireless for my self and two wired for a friend. All were low budget systems. Mine gives me something to do while I can't sleep, which is a lot cause I'm old.
The wired ones are nice too, but they entail some knowledge and labor to running the lines.
My thoughts, anything is better than nothing. Remember to post signs, they are probably better than the cams.