Great review Lee. If only the 1 has appeared in 1988, the yuppy market would have loved it! I guess that generation are in their late 40s-50s now, so probably the exact market that will buy into this 'posh' SONOS system.
Design wise, the A1 for me is the best of the company's range. The leather strap (hopefully vegan, fake leather :) and round design work well.