I've been using the FBX100 and Gen 2 formulas from Firebird Inks for about 5 months now with great results. We do mostly performance poly and CVC, triblend and rayon printing. Nick and company are great to work with and answer all of your questions. I highly recommend them. I'm trying to figure out how to post pictures to upload a few sample images. We've even printed on 100% nylon with zero ink washout. Good stuff.