I bought the Schwann 2 camera security system, it's full color and infra red with sound, wireless or wired. I have lights in the stalls so the infra red was a bonus but nice to have when you think they're just getting close but don't need to keep and eagle eye on them. Got it all hooked up yesterday and the pictures are really good, lots better than I expected. I didn't expect the infra red to be very clear at all, and it's pretty limited, but it's sharp enough that if there was something unexpected I could get out there and either assist or turn on the lights so I could watch closer.
The specs say it will transmit 165 ft, I don't have mine that far away, but it is inside a metal building which has killed more than one camera's transmission in the past.
I just zero'd in on one mare because the other isn't really ready yet, but in the next couple nights, I'll put the controller to flip between 2 cams. I'm very pleased with the purchase, cost me around $199 on sale.