Hi, I'm trying to decide on a DVR but there are many out there. First I'm looking for something less than but not more than $1000 for a 4 channel. The specs I'm looking for are 120fps, good resolution for rec and view, HDD can be changed, network access no need for WAN, and a good client program. I want to hook up at least 4 DVRs to network and access them through a computer on the network, that way the DVRs wont be in the office.