I just went through a bunch of research on this and I was very intrigued by the Unifi cameras (and still am); one warning Jay, for what it is worth... it looks like their NVR will only allow Unifi equipment, which means it is difficult to do a partial migration/upgrade and can't add a non-supported device such as a doorbell (which I would love if Ubiquiti would create...)
Their cameras are a bit expensive for what you get in terms of features (e.g. look at that new one Korey posted - $450+ with no PTZ, only a fixed view zoom), though perhaps they are of better construction than cheaper... of that I don't know.
I am just about to swap back to Unifi router and APs, equipment comes in today and tomorrow. Still deciding on cameras, after feedback on the forum I think I will go with Unifi or Blue Iris, but that is down the road.
Adam