Gibson486

Is there a site i can go to to actually get reliable reviews on these CCTV systems? My mother wants to buy one and her budget is kind of low. I see them at BJs, but I am wondering of those are even worth the price. Is Lorex even a good brand? what specs do I look for? Are those Amazon black Friday ones even decent? I contacted a few contractors and lots of them will not even share the brand they will buy..... I kind of feel like i will be paying them $1400 just to route cables.