You might want to also look at Dallmeier, or Cieffe. Dallmeier is German. You might also try Kodicom they might be cost effective for you, and they are in Korea. Try to stay away from Pelco 9000 series, its just a piece of junk. Or try i3DVR out of Canada, I know they have a 480/480 machine that not too expensive.
http://www.dallmeir-electronic.com/
http://www.kobicomm.com/
http://www.3idrd.com/
or you can try http://www.cctvlabs.com/Central/central.htm and choose for yourself. Good luck, hope this helps.