So I had a good poke about in Wellington today and settled on the Bose Revolve. The Revolve Plus was just a bit large for the intended use. The Revolve is heavier than I would have preferred but the sound is really pretty good for something that size and shape.
Ideally I would probably have got the Kef Muon but at about $500 that is more than I wanted to spend. Maybe I will get one for the house some time - and it's certainly cheaper than the $100,000 Kef Muo from which it takes it's design cues!