Thank you that's helpful, especially as for some reason today I am ready to throw my Node out of the window because it's misbehaving. I do like the look of the Neo Ace very much and, as you say, they go for reasonable prices if you scout around a bit.The best sounding, to me, all in one is the Gold Note IS 1000 Deluxe. Ticks all tne OPs requirements, plus it really is a great perfomer. Should be available used for around budget.
There was a concern above about the Moon Mind app. In the past, it was a bit hit & miss, but it now seems very stable and responsive. I use Roon with my 390d, but have tried out the app and it is much improved. It also provides app control of the device, which can be useful from time to time.
The Moon Neo ACE should certainly be explored, especially at tne price they now go for, often with warranty from a dealer.
I am not at all familiar with the Gold Note but will have a look at that one, thanks.