Have a wired swann system on the outside of the house and mixture of cheaper (and for the most part reliable) CleverDog and some other camera from amazon marketed as baby monitors.
I use 2 of them as baby monitors (they work 99% of the time), a clever dog in the garage which is a bit flaky – gets set off by large moths, however the main house alarm pir in there doesn’t, so I don’t worry about the motion control.
When I go away I power up the other 4 cameras so I can monitor the house remote, in case the alarm does trigger, or as happened to our friends in the last cold spell, the kitchen floods….
(I was burgled approx. 18months ago, so my level of surveillance might be a bit OTT)
EDIT – I did also have the arlo 4 cam system for a while (hidden in bushes looking back at the house) but found it unreliable and slow with the motion control – you could walk past on occasion without tripping it. So it went back. I’m still on the look out for a reliable weather proof system I can deploy in the hedges looking back at the house – this is so you get a better facial shoot than the wired system on the house will do – as those cameras are looking down from the eaves so you get a limited face shot if they are wearing a baseball cap.