IP Camera Help Ideas

Has anyone configured some good IP Cameras and what types you use? I am trying to see if I can setup 3 or 4 IP Cameras in a conference setting that I will use manycam in a google hangout meeting.

Just a caveat - I tried setting up some IP cameras with ManyCam and found that there was too much lag. IP cameras are not designed for real time video. Even with a wired ethernet connection, the lag between the audio and video was really bad.