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.