Wingy, I use a Foscam F18910W. There are lots out there and some are cheaper (some are more expensive). I've had good luck with it. It is color, built in mic, two-way, infra-red. I think it was $94. I got it direct from Foscam so I would have support if I couldn't get it hooked up or had trouble with remote viewing, but I didn't have to call.
The quality is good, but dependent on your network speed. The cam is wireless. My DSL is slow (for DSL) so it can be a little jerky and slow to adjust if you are remote. With the software they give you, you can move the cam, take a still pic, turn infra-red off and on etc. You can also view it from your smart phone too. Video cuts in and out sometimes as does audio, but that is the connection, not the camera.
I am satisfied with it. It serves the purpose I intended it for.