Hepco and Becker top box

I am looking round for a smallish top box for everyday use and like the look of the 30ltr 'Exclusive' from H+B.
Has anyone any experience of this box and if so does it come with a base plate to fix on a 1150gs rack?
Any info appreciated...............

Had a "Journey" on my last bike, a Givi before and after. To me the Givi is better quality,

eg the hold down mechanism on the H and B doesn't stop the top box moving enough to mark the frame / box,
eg the locking mechanism is on the bottom of the H and B and is totally unprotected.

Depends I suppose if Givi does a small enough one, and if the smallness is a real issue.