You can view a single camera with two systems
if you use two receivers. The only trick
involved is getting the antennas positioned
so the video reception is good for both.
I personally like the WideEye camera, and
with the Ninja base and all, I'd say the
package deal is the way to go. That is,
unless you want to spring for the Vanguard
camera. I have one on my desk here and it's
very nice, but then again I didn't have to
pay for it.