We fitted the "NASA Marine" NMEA
one about 18 months ago and since then have done 2 pacific crossings and winds up to 50 knots without any problem.
The wind speed indication isn't perfect (perhaps slightly delayed) but that may be down to my NMEA
buffer. Otherwise it seems as good as the expensive ones.
Considering that any alternative costs 4 times as much, I would recommend buying
the NASA unit and a spare one and still pay half as much. They also sell spare cups and vanes very cheaply so grab a few spares while you're at it.
I think due to obvious trademark issues the NASA instruments are sold as "Clipper" outside europe
I bought it from Amazon UK and they not only deducted the tax for export but posted it very cheaply as well.
For a display I picked up a used Simrad
IS15 display which has NMEA input, it's a true analogue display but it does seem to crash occasionally with a random alarm
. NASA sell a suitable display too.