Yea all those similar devices looks the same ..
They gather usually less interest as products, as they are targeting an small range of users.
It looks fancy , but in action, there is not much to see.
Testing it ? yes why not , but what you expect to see ?
Accuracy ? All the high price of it, goes that it is triple tested and accurate.
In such level of tools , all that maters , are the usability factor,
my vote goes on the one who does the job with out to confuse the user.
In simple words to be practical and easy to use.
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