I've though about this before but wouldn't latency be a problem unless you're using a CCTV?
Sort of. The research I have done so far seems to show that the wireless network (IP) cameras have a pretty bad latency. Stuff like from Logitech, DLink et al that just work over your wireless network. They would be the most ideal if it weren't for the retarded delay they have, I'm talking 2 seconds or more in some cases.
The next best is the wireless cameras that go to a receiver and hook up to a TV/monitor. Those seem to have a much shorter delay. There is one I found, [ame="http://www.amazon.com/Lorex-LW2110-Wireless-Digital-Security/dp/B004T9Y0MW/ref=wl_it_dp_o_npd?ie=UTF8&coliid=I367FKXTBYO8L2&colid=QI5MGEM8ZANS"]here[/ame], seems fairly solid. I couldn't say what the exact amount of delay is, but I found a video on YouTube where a guy hooked it up and you could hear/see the audio/video delay, it wasn't too bad, maybe half a second. That particular one might be what I get since the receiver is very small and attached directly to the back of the TV. I think I could deal with ~.5 second delay, but I wouldn't hesitate to return it quickly haha.
And, finally, the one with virtually no delay would be a totally wired setup. But I am really not wanting a bunch of wires to deal with. Either camera I get, there is a power wire to deal with as it is. That's tolerable, but I just don't want to run a video cable from one room to another. So, it's either wires or ~.5 second delay, for me to choose from....