there are many MANY windvanes out there...but there are still standards out there that have become cult classics almost like the aries and monitor
the last time I was looking at new vanes and being latin I was very interested in a argentinian made vane similiar to the bouvaan windvane kits, sailomat, etc
they were priced well and are used in the argentinian waters that are quite the proving grounds if you will
here is the link:
South Atlantic Windvane Self Steering
in any case you have a bunch to chose from...
oh before that I was really looking at the norvane windvanes but they really hiked their prices a lot since they started