We recommend staying with the branded filament as it's formulated to work best with the brands 3D printers. Our experience has shown that what you save in cost you'll most likely loose in time reprinting failed prints and unblocking nozzles with some cheaper generic 3D printing filaments.
If you're looking for Filiform filament unfortunately we have bad news. The company that imported this brand has closed its doors. We recommend Flashforge PLA PRO as a very good alternative with similar, if not, better printing and physical properties.Buy MakerBot, TierTime (UP) and Flashforge 3D printer filaments. Volume discount available.