I've had B&G instruments for 12 years. The wind
instrument has worked perfectly all the time. I've had to change an impeller, the temperature sender went crazy. On the Raymarines I've had them since 2004, changed the whole wind
instrument twice, the present one still goes wonky occasionally. The speed indicator jumps all over the place, I've given up on it, relying on my GPS
most of the time. If I were interested in sailing fast it would be really frustrating as it jumps all over so it's hard to know if you've made the right adjustment to the sails
, whereas the B&G is steady and reflects changes in speed well. In addition the Raymarine impeller seems to foul up a lot quicker than the B&G.