Mu-so plus which small speakers for unitilite

I currently have a Naim Unitilite & Neat Motive 2 speakers - due to kitchen / dining rm conversion I am planning on relocating the unitilite to my home office & changing to small wall mounted bookshelf speakers.

I then plan on buying a Mu-so or Mu-so QB for the kitchen / diner.

So I could do with the following advice:

1, Suggestions for small speakers (initial thoughts are Neat Iota) for the unitlite

&

2, is the much difference in SQ in the mu-so models, if so is the difference worth the extra money ?

Thanks in advance for your replies !