I like FSA because they are filling the gaps that Campy/Shimano leave wide open. When Shimano went external, Campy went compact. FSA does both.
Funny how it works…they must attend each other’s marketing meetings. Just like those rascals at Litespeed and QR. ;o)
Overall I really do think we need more options. When/if SRAM comes out with a hollow pin 10 speed chain I’ll be doing backflips…heck, a new road groupo and I’ll be dancing in the streets.
Back to your question - I’m biased towards (my perceived or actual) the stiffness of DA 7800 cranks…and would consider FSA to be one very small notch behind. In actuality, perhaps not true…