Biggest issue I found was the cable length.....where do you hide it  
  
I also found that black and white cameras are far superior quality too colour ones, especially at night  
  
And as we well know, the police won't do anything with your CCTV in the event of a crime  
  
Usefull as a deterrent, but there will be spots, my friendly neighbour used to walk in backwards with his hoodie on, lay down, place nails under my tyres, get up then walk away  
  
When I caught t his idiot on my CCTV, the police looked at the footage, and said, 
  
You can't prove who it was, and you can't prove he put nails under your tyres......  
  
So, there are ways around committing a crime.