I've been using a Kuat Vagabond with good luck. It is big enough that it holds plenty of gear, but short enough that it doesn't cover the sunroof- it stops just at the back edge of the glass.
I would recommend getting an exrta set of cross bars since the factory bars are a little flexy. The roof rack bounces while driving on cement highways when I have the roof basket and a hi lift jack, and I've been wanting to add an extra set of cross bars to stiffen everything up. Also, go around and tighten up all of the bolts (especially the ones under the cross rails and bars) so you have a quiet rack.