I do like my givi/kappa boxes.
2x V47 (one for each bike, mine is an NT)
1x pair of E36 as panniers
1x pair of K21 top loading panniers (same as E21)
1x pair of K690 panniers (44ltr)
The panniers are interchangrable on the two bikes and we swap and change depending on what we need to carry on a trip.
The locks on the newer V47 are far better than the older ones.
I've snapped a key before now on the old style. - but use the plain metal spare key in the new style as the plastic ones always stick out from the key ring and stab me.
I've changed the 2 larger sized panniers sets to the same key as they are the two we usually use and I don't have to have a top box key and 3 pannier keys.
Pity they wouldn't supply a kit of 6 locks only 1, 2, 3 or 5.