What do you want to use it for and where in the world will it be used? Police surveillance? SAR? Do you need one optimised for seeing humans? Or is this less about the pure FLIR capabilities and more about the turret/mountings/integration with TV etc?
Our SAR ones are STARQ provided by FLIR Systems UK - a Quantum Well Infrared Photodetector with a Stirling Rotary Cooling Pump. Optimised for locating a person in the water. It's V good.