[GMcL]

The Volvo kit is pretty good, I believe it is Thule.

You can buy Thule roof bars as a kit then swap the feet as you swap cars, works out at about €100 each update as opposed to 250-300 for the manufacturer bars. the Volvo bars are good.

I bought a Volvo roof box in 2007, it gets used a couple of time per year, no cracks in it yet and the locks are pretty robust. I also installed a lift in the garage to lift it straight on and off the car. saves it getting knocked about.