Thanks, Math-you. I knew about the different Powertrax systems, which is why I'm quoting the price for the street version. That's the one I was planning to get, but the Aussie web site makes their locker sound like it would work just fine on the street.
Has anyone heard any testimonials from actual customers about the Aussie on the street? The Powertrax street model was designed to be quieter and smoother than their own locker, but the Aussie folks claim theirs is the quietest locker on the market.
Just trying to decide on which one I should get. I'm not planning on doing any off-road driving. Right now, I'm leaning toward the Aussie.