chlorox One other interesting thing re: stability is the actual shape of the machines. The Nurri has those swept-back wings, whereas the ACS cannot be defined as anything other than “boxy”. However the side-panels are unlikely to add that much weight/move the centre of mass much further back - you can see in the photo here that quite a chunk of the length is ‘empty’.
I think the stability/anti-tipping is more likely to come from the distribution of weight inside the case (e.g. positioning the boilers closer to the back) and positioning the feet closer to the corners, than the length itself. The Nurri is also ‘inherently’ lighter than the ACS - it’s 35 kg without a counterweight, vs. the 39 + 8 of the ACS. My back is not grateful.