Isofia

I recommend Dahua,Hikvison, or Foscam, if they has a distuributor in your local place.

As you want to use for evidence, you'd better to choose very HD resolution. Foscam,Hikvision,Dahua is good.

Yes, when choosing a reliable&long-term supplier ,it need take some time. A Not good supplier may waste your time&money to involve in the solving products problems&returning issues. It's a opportunity for inspecting locally: Choose several maybe trusted Supplieier frist,and then come to CPSE 2013(Oct.29--NOV1), visit their factory to make a comparison. You can see the company truth not Ads. . It is better than what you do only by google,network. I recommend you foscam,&Hikvision or Dahua, which are better than Longse. And our company and I also participate in CPSE. If you come,and need any help, you may contact me. I will do if i can help you.

you may look at your local laws for reference.

I don't know this question. you want to install two DVR in a CCTV ? May you need to ask your DVR manufaturer. Is there a cam manufactuer, can offer a storing server,then the cam recording&snapshot can save in that server?

HD,night vision in banking use, I suggest Hikvision&Dahua cams. You may have a try.

well, choose HD outdoor cam with ir cut will be better. Cam with alarm function&motion detection.

why do you want to buy peephole cams? And batteried cam not last very long,not better than Power supply. If you want to buy mini home ip cam,wireless ,you can choose foscams.