I really like my track-based VanTech rack. Very professional and sturdy. The tracks bolt directly to the roof with these really nifty blind rivet-nuts, so you don’t have to yank out the headliner to bolt it down. I think my rack with 60” tracks is rated for 400 lbs (but I’d never attempt putting more than 150 or so on a car roof).
There are some pics in my “build thread”: Infinity-Cleaning-Mobile 2.0 - #83 by Infinity
