Did some practical measurements and went for the Wharfedale Diamond 12.0's.
I was in doubt because the 12.0s were 220 euros and the 12.1 just 60 euros more. So in terms of a "deal" that is a no brainer in favor for the 12.1s for probably everyone else.
The 12.1s seem to be clearly standmounts in dimensions and weight to my surprise (thought they would be a bit more light weight) . I prefer an illusion of space in the room and will put them on "real" shelves hanging on the wall at the right height on both corners of the bedroom (there is door in between which makes the choice in stereo between too narrow and slightly wide a preference in the latter for me) . For the place and purpose they serve the 12.1s were slightly overkill in size and weight.
If the 12.0s were scoring worse in tests I would have maybe chosen the 12.1s and figure something out but there was an online test in which they preferred the 12.0s in sound in the series was what made me cut the rope.
Delivery will be tomorrow..