Packasport System 90. I purchased one last year for our summer vacation. Fits like a glove on the EX roof rack with factory crossbars. No lift (according to Packasport) due to aerodynamic design. I had no problems with high speeds on a 3,000 mile trip. I did keep an eye on the rack and crossbars, but had no issues. It's expensive ($900.00), but also the nicest and highest quality.
Mike
Mike