Actually, I have to agree with you - the A540 was cracking - in fact all of the Axxx range had a great case design (it being the same . One of the reasons I liked the RPC case was the extruding drive section - certainly an Axxx throwback - and it showed a kind of 'family linkage' between the machines. I also agree with you on the internal problems of the RPC case, mind - I only ever got to 2 slices, but what a arse on! I kind of let it off a bit for the space wastage over at the processor side though, as it was ideal for anyone to produce a tall second-processor add-on. Not that anyone did. I hit someone with a A310 once. Did more damage than I expected.
So come on, everyone - what was your fave Acorn design?!