Just as a reminder, our thread starter here was asking about the GFS pedals, not the Line 6 multi-effects modelers.

I'm not personally familiar with the GFS pedals, which definitely appear to be rebranded BiYang pedals. Plenty of sound clips available on the GFS site, though. Certainly nicely priced. No idea what the build quality is like. You might want to rummage through the Harmony Central reviews and see how people like 'em.