Thanks. I've a had a few recommendations for a Sugden now. Perhaps it could be the one!I'm little late to the party,
The Sudgen a21 sound like it will certainly have the sound you seem to be looking for and would certainly keep an eye out for one.
I own the a21sig but you may want the a21se as it has just a little more power than the standard and will work with a few more speakers but cost a little more.
But the bass is defo fatter and music has a flow that's hard to describe if you like naim you'll like Sugden similar virtues as a brand. But I much prefer the Sugden character. Get the speaker right and you'll be sonic heaven.
Pro arc is a known thing with Sugden.
hope that helps.