I'm new here and just now seeing this, but $700 for 8 HD cameras and a central recording system is never going to happen. If you want 8 cameras, you're going to have to increase your budget. I use HikVision DS-2CD2332 cameras, which I believe ware about the best quality (3MP) POE cameras you can get for the money. That being said, the best deal I ever find on them (not copies) is about $125 each. Then you need a central recording system, like a quality NAS with 4+GB of space (because you have 8 cameras). If you are lucky, you might still be able to find a good NAS like a Synology 213j (this is an entry level NAS) will run you at least $170, then you need a couple of drives, add another $350+, then cables, switch, port injector, etc.. If you are not willing to spend at least $1,600, then you need to reconsider your goal.