Grandeye's cameras are now being marketed by Oncam Global; Grandeye is their technical arm. In a nutshell, the Oncam camera has higher resolution (5 MP vs. 3 MP), better low light performance, and a smaller exposed profile for covert installations. The motion tracking feature works well and is a key reason to buy this camera. The Mobotix Q24 is good for exterior applications and includes audio. I don’t use the advanced features like VOIP or record on camera so they are less important to me. A full comparison of both cameras is posted at http://www.watchpointvideo.com/testing/testing.htm. Incidentally, Oncam sells direct to system integrators. The Web site is http://www.oncamglobal.us.