I do most of the work on my British sports car and have three different torque wrenches so I'm pretty sensitive about accuracy and durability. I too have an Effetto Mariposa Giustaforza and love it but it is expensive.
I also have a CDI adjustable torque wrench and find I use it the most. It was a lot cheaper (~$65 bucks) than the Effetto seems to be just as accurate and easy to use. This is a high quality tool and I have found that it will give accurate results at the low and high end of the torque range.
https://www.amazon.com/Products-Torq.../dp/B01DIRD5CG