I love my Filcos. It's still my favorite stock keyboard.
My main Filco is a full size that I modded with clear stems, 85g gold Korean springs, and lubed with Krytox, and aboStudio clear switch tops. With a stainless steel switch plate I had laser cut. With Cherry keycaps, that keyboard is as good as any I own, honestly.
In total, I own 9 Filcos currently. I have sold several over the years, and picked up new ones.
I own a Ducky Shine 3, which is almost as good, and I just sold my KUL ES-87.