Generally, it depends. If you just need mounting acessories use cheap QR-02. If you need mounting cameras or similar things and have good QR in all places - use Giottos MH621 or Manfrotto (but former do not have levels and are overall more cheaply made).
They have backstops to prevent camera rotation. Arca-Swiss compatible, of course. Very actual for HDSLR that do not have stop pin hole like on camcorders. If you use FF it will be especially noticeable. Search for longer or shorter plates from same seller.