Let's get started - I got this for those "I wish I could have seen that there" moments in my life. It could be checking the engine on some equipment to see if it has carbon buildup, or more likely it's checking the wall holes in my house.
I've never had one of these before so I can't compare it to anything. It met my needs, so I gave it 5 stars. I've added two pictures, but I must say the one in the listing represents it pretty well. The picture of the fruit in my basket doesn't do a good job of the product - it's not the right color and doesn't look very "crispy". It looks much better but wanted to include it in this review.
I tried a few things that I couldn't get a picture of because I needed three hands! I used the product and read the instructions that came with it. The font is quite small and I can easily read it on the screen, which I think is great. If for some reason I have to read the model number of a device or something like that, I can use this tool.
Another reason I gave it 5 stars is that at its current price of $40, it seems like a steal to me.
All that said, I think it depends on what you need it for. If you need to take photos with it, perhaps to show your customers that you're an auto mechanic, this isn't the tool for you. You'll have to pay more to get a device with this feature.
This seems to work pretty well for basic inspection of things you can't see.