I was quite excited to add this to my diagnostic arsenel. The potential to be able to visualize thermal properties is a huge help in many of the vehicles I see on a regular basis. The biggest drawback I have experienced with this tool is the resolution is not good. While I get that there are going to be surface features that may not show up with the greatest clarity on a thermal camera, there are much higher resolution options that will give object clarity while still showing thermal properties of a given object or area. The amount of calibration time this tool takes is also rather frustrating. i have used a few options from various manufacturers, and my favorite so far is the FLIR One attachment. resolution is much better, and clarity is also much better. Scaling is also an issue, as you are unable to select a focal point, or a fixed temperature range, which would make some things much more detectable. Where the snapon shines is durability. The tool is comfortable to hold, and pretty easily accesible whereas it is nowhere near as cumbersome as some of the alternatives. With software updates, and tool revisions, I have no doubt this will become an excellent tool, however at this point it definitely is not worth the asking price.