Multi Tools Reviews

Is there a review of several instruments of all power?
The Fien seems a good tool, but is very expensive. In addition, Harbor Freight makes one for $ 50. Bosch, Dremel, Rockwell, and Secco also make similar tools. I'm sure there's more. Has anyone done a complete comparison rates of these tools against each other.
Consumer Reports has done a proof of participation of most but not all. It does not bother with the freight from the port of
Gerber Crux Multi-Tool Review