Dave,
I used to race road bikes for a living and I have used Yakima (and to a lesser extent Thule) racks for many years. I would go with Yakima due to their superior overall quality, parts availability and customer service. Yes, they're exepensive but quality costs $$$$.
As you may know Yakima sells their products in a modular format. There is a huge variety of options. Once you have the proper crossbars and bike mounts you can buy towers to fit almost any car. If you find a good deal on E-bay but the towers are not correct for your car simply purchase the right towers from an online dealer.
Check Yakima.com and go to "choose my rack" to see if a Yakima fits your car.
If you are dead set on a roof rack that's fine, but consider a hitch mount as well. Your new Jetta probably does not have a hitch but installing one may be cheaper than you think, and Yakima hitch racks are much cheaper on a per bike basis. Roof racks expose your mount to the airstream over the car, resulting in decreasd gas mileage and tons of dead bugs stuck to your bike. I don't have to tell you how bad bugs are during midwest summers. I spent hours cleaning my bike after driving to races there. It is also MUCH easier to hang bikes on a rear rack than it is to lift them onto the roof.
Have fun and ride safely.