NMEA or Ethernet

[Cjones1820]

Which is a better way to network and why?

[Edd]

Really not a 'which is better' scenario as much as it is a 'which do I need'.
A very general way to approach this, N2K for sensors and ETHERNET for the rest, or ETHERNET is fast and N2K is slooow.
Even with both networks installed, which I prefer, you still can't share everything.