Im not sure about pricing elsewhere,
But the fiio e9/e10 is for £130 here, with the nfb 12 at £190.
The fiio e9/e10 beats the nfb (stock filter) in SQ comfortably. Yes, comfortably, in my opinion.
Okay, you don't have optical and coax features, but you do have a cute ultra compact usb dac/amp in the e10- that smashes to bits the udac2. And the e9/10 occupies a much smaller footprint on my desk than the nfb12.