I am looking for CCTV camera installation for my entire Bldg/society/colony which is around 50k sq ft. Which 1 would be good let me know. Which one should I select. My bldg managing committe has got a quotation from Zicom 15k per month for 3 years on rental basis for 20 cameras and after 3 years they are all ours. So we just need to take care of maintenance after that. For these 3 years they will help with recording and all. I need your suggestions where i can save my entire bldg member's money guys. 540k total amount of 3 years. a very big amount. Please guide me on which cctv cameras to purchase in today's time which can work in all weather conditions night and day both