No need to spend $600, or even $500 or $400.
Our company Sharx Security http://www.sharxsecurity.com has some excellent quality outdoor PoE cameras with IR night vision starting at $239.95. The model SCNC3706 has a very sharp 640x480 resolution, made possible with a MegaPixel grade lens. Like all our cameras, it has MicroSD and NAS recording ability. In fact the MicroSD is included and pre-installed. Here is a link where you can see the picture quality from a live camera: http://sharxdemo2.servehttp.com:8153/live/0/jpeg.jpg
To step up to high definition model SCNC3805 with 1280x720 resolution is only a little bit more: $299.95, and even full HD 1920x1080 is under $350. The high definition cameras also include wireless, so you can use them with PoE or Wifi b/g/n whichever is more suitable for that environment.
