The ProStart seems to offer a lot more functionality for a bit more money, does anyone have any experience with them? I'm going to be racing a J/22 this year, are there any class rules that would keep me from using it?
I don't think I need to ask for opinions in this forum but I will anyway...
Tacktick micro compass is legal. Velocitek is not class legal.
One can exactly duplicate the function of the Velocitek with a decent marine handheld GPS. I'd go with the Tacktick. If gives you upwind lifted and headed indications in a really neat visual form.