Sorry , I only just saw this post as I dont normally read the secton sinceethere are always sooo many 'techie folk' giving help on the forums.
CCTV on a big scale is the mainstay of my job and I can safely say whoever pointed you to HIK Vision pointed you in the correct direction.
You can do no better for the money and despite beinga 'Chinese manufacturer' they are fast becoming the lead name in the mid price bracket.
If you want any specific help re choosing or to know where I get mine
( an E Bay seller but he has been reliable) by all means P.M me.
Please please only go for an IP ( digital to some ) set up with an NVR as we are in the 21st centry
Cheers Mas