I too thought it was a rainbow unicorn for many years, but I was relentless in my search for high quality flag crimper.
For an interchangeable jaw crimper, seek out the Knipex 97 43 200 A. They have an exhaustive amount of dies available. It can be bought as a bare tool or with a case that holds several die heads.
Their sister company, Rennsteig, are the identical tools but with a different color scheme and numbering system. Their part number is 624 000 3 . There are also listed as the PEW12 series.
Both are made in Germany and of exceptional quality. I use many different Knipex crimpers and hand tools.
My Rennsteig 624 754 3 crimps flag terminals and open barrel sta-kons. It is the interchangeable tool with the die included. Shop around online, I bought mine from the Amazon.de last April for 66 Euros.
https://www.amazon.de/gp/product/B00...?ie=UTF8&psc=1
However, I just checked the listing and it's now 416 eur??? Something is not right there.
Standard burnished finish Part: 624 745 3
Chrome plated version, Part # is: 624 745 6
For the die only Part #: 624 745 3 0
The uninsulated flag terminals I use are Tyco 63314-2.
They are different from most flag terminals because they have a very important characteristic:
the dimension between the rolls allows them to fit on the posts of compressor terminals.
I picked them up from digi-key, the come on a reel and have to be cut-off individually. High quality and inexpensive.
https://www.digikey.ca/en/products/d...3314-2/1151374
Rennsteig also makes a die specifically for these terminals. The advantage is that is able to crimp 18 awg, not just 14-16 awg.
Part #: 624 1642 3 0 RT
I hope this was useful to you, let me know if you have any questions. This is something that I had been chasing for a few years to find a resolution too.
Yes, I realize there are other flag crimpers out there, but I am a bit obsessive about quality.