Concave Fret file recommendation

I Use LMI Fret wire fw74.

I would like to thank everyone for the recommendations you’ve really been a lot of help

Oh for heavens sake. This forum is just a little slow to respond OK. To wait EDIT: less than a day and then post a snarky remark is very poor form.
This is most definitely not the Aloha spirit.

I use LMI's FW74 almost exclusively as well. I use their medium size crowning file (FFRM or FFPF) and it works very well. I bought the file about 20 years ago and it's just starting to show some wear and uneven cutting action so I should probably replace it soon. I may switch to the replaceable burr style they sell but I've got so much muscle memory built around using this one, I don't want to start over.

Thank you very much I appreciate the information and now will move forward with buying the right file