A few questions about DAC. Interested in getting started in this for the new year

Talking about DACs…

Can anyone explain why the HiFiberry is listed as the go-to audio device when audioinjector-wm8731-audio is supported. Are there any caveats?

The audio injector is cheaper and with my limited hardware knowledge it seems like a better deal with headphone preamp, dedicated crystal for timing and presoldered header. Plus there’s stereo input as well.

Am I missing something?

Ðaniel