the right speaker cable for the uniti

You want some cable long enough to get to the speakers.

I won't charge you for this advice.

Naim advise use of NACA5 but other cables can be used. I hooked up my Uniti with Chord Carnival Silver Screen at first - and then bought some NACA5 terminated with Naim plugs from my dealer.
Naim's advice was right. It sounds better.
End of story for me. I have no worry about cables now. I'll stick with what's best. But it's all down to personal taste.
(Mind you, I can now spend money on music instead if obsessing about cables. To paraphrase: My advice is NACA5!)

Just switched from Kimber K to NACA5 and preferred the NACA5! One of the first thing I noticed was the bass which was more pronounced, without sacrificing the HF and midrange.

Rumour 2 is warmer than NACA5 without the bass articulation, but it is a bit sweeter in the treble. Overall it has a different balance (more pleasant) but I think it robs the music of some pace and involvement.

Yes, it should be NACA 5 for the right speaker, just at it should be for the left.