The first one has a lower speed requirement, but does not list the price.
What I am temped to try is a car alternator with a centrifical switch. When the wind generator hits a certain speed it will allow a battery to flow power to the alternator to power the magnets for a tiny bit. After that it can power itself and generate power just fine. This would let me use a much cheaper alternator (with rectifiers and voltage regulators built in) that is also much lighter (electo-magnets instead of PM). This would also have a lot lower mass to spin up than most wind generators and not apply a load until it can actually take it. The drawback is the requirement of the switch and battery, a low voltage high amp wire so you would need thick cables(making it require having the battery and inverter very close), and a pulley system as car alternators require a high RPM.
I wonder how much power an alternator needs to start.... maybe I could use a tiny PM generator to power it up instead of a switch and battery. Then it could be self contained.