I have upgraded/replaced all the instrumentation on my boat, with Raymarine everything. Depth / speed. Wireless wind, RayMarine Axiom 7 MFD. RayMarine Autopilot.
Oh - I lied, I have a Simrad VHF, with AIS.
Everything is NMEA 2000, all RayMarine is SeaTalkNG networking.
Be prepared for high priced cabling.
Most any modern MFD which is NMEA 2000 compliant should work with the appropriate cable adapters.
But, why not go with RayMarine for 100% compatibility?
My RayMarine Axiom 7 MFD is quite intuitive to use, it displays AIS targets from the Simrad VHF.
The Simrad VHF gets its GPS position from the MFD. I only bought the Simrad VHF because it was ridiculously cheap because the EU had just come out with a regulation that VHF's would have to have built in GPS, which these units did not, so Simrad was discontinuing them, and dumping them on the market.
My Raymarine autopilot will steer the boat in apparent wind angle mode from the RayMarine wind vane.
Because I have all the necessary data on the network, the MFD will display not only apparent wind angle/speed, but calculate true wind angle/speed as well (which is very useful for a sailor).
My advice would be to go with all one brand, as much as possible. B&G, or RayMarine, etc.
Less calls to tech support. You just plug it in, and it works.
B&G looks good also.
Fair winds.