Hi Bill and all,
I went with all Furuno 7 years ago when I completely re-instrumented with a NMEA 2000 (Furuno is completely compatible with NMEA 2000) backbone and have had no issues and have been quite pleased. (I was a B&G guy before that over a couple of decades and instrument packages, but B&G had changed hands and just come out with a whole new system and I did not want to try something untried in the real world of cruising.) I had Furuno radar for decades and was always happy. It is always heartening when the commercial fishing guys and gals almost always have Furuno radar. I suspect Furuno has a world-wide presence (and it certainly has so in Europe, North America and Central America).
I would lean away from Raymarine strongly. Too many cruising friends have had significant issues in out of the way places. Their QC seems to have on-again/off-again years and they like to get their new designs out to the public far too quickly allowing their customers to do the R&D on their products.
B&G has a good solid rep. but seems less of a presence among cruisers than it used to have: probably because the company changed hands and/or amalgamated with others or something.
If you are feeling a bit adventurous, you might consider a Maritron package. They are the go-to people for NMEA 2000 backbone gear and have a good reputation for their instruments (check it out as my info is a few years old). I say adventurous because when I last looked, you would need to design the system yourself (with their help) and their equipment while solid and doing the job, will lack the elegance and polish of the B&G’s, Furuno and Raymarine products: lacks the price tag also.
Finally, if at all handy, consider doing the job yourself. It is not hard, but it does take time (the hard part can be the enclosures/mounting). I have seen terrible looking jobs done by “professionals” and trouble-shot jobs of those who did not follow directions and cut corners. Much of the considerable time to do the job is running wires (after considerable time pulling out the old instrument’s wires): all that grunt work would be at the $$ hourly rate of your local professionals.
Come back with questions/comments/thoughts.
My best, Dick Stevenson, s/v Alchemy