Thule and yakima are both very popular. Check what style racks are made to go on your car. It comes down to "crossbar" shapes. Newer cars have the "whisper bar" shape. Older ones usually have a square or circular shape.

Buying rack setups from stores is insanely expensive.

Craigslist and rei used gear sales can help you save hundreds.

Downside is sometimes they dont come with all the pieces from those places