It is a good mid-range thermal. The biggest advantage/disadvantage to the PTS536 is the 4x base magnification and narrow Field of View. If you hunt wide open areas, it is a nice thermal. However, if you often hunt tight cover or shoot at multiple targets in a row like a sounder of hogs, then probably not the best option.
Here are things I like about the Flir:
1) Confidence in yardages past 100 yards due to the 4x base mag
2) Very clear definition of object especially for a 320 thermal
3) Color Reticles and palettes
4) Size
5) Really good QD base
6) Shot Activation Recording Feature (Both sensitivity and length of recording)
The things I am not crazy about:
1) Focus ring is touchy and hard to focus but a cattail can be used
Link
2) Background objects look a little messy
3) Buttons are hard to press with gloves
4) Hard charging coyotes can be hard to locate
Here are 2 videos using it on some coyotes
Video 1 ,
Video 2