JBS - Nice choice on the 5i - I have the Naim 5i (italics) and I am using KLE Innovations gzero6 speaker cables.
I had their gZero2's to start with but migrated those to the AV system when I got the gZero6's. The 6's have better bass control and imaging
I have tried the zPurity 8's (an earlier version) but i found their improvement to be marginal comp[ared to the 6's
The gZero6's are the best bang for the buck of any cable I have tried, but they take some burning in to be at their best.
They will demonstrate exactly how dynamic NAIM amps can really be.
I was using Van den Hul D-352 - but the gzero2's trounced them and the gZero6's left the D352 far behind in their wake
I can also recommend KLE IC's - the gZero3 is a very good cable (better than most others), but the gZero 10 and 20 are exceptional.
I would also recommend NOT to use the NAIM DIN cables/plugs - the KLE Harmony RCA's are excellent on single ended cables and work extremely well with NAIM gear - the DIN plugs are lifeless by comparison
http://kleinnovations.com/kle-innovations-klei-products/klei-harmony-plug/I now use IC's of my own design - which perform to the level of the KLEI zPURITY 88's
If you are into DIY see...
http://image99.net/blog/files/4127b5fe2694586e383104364360373b-74.htmlLofty claims? - perhaps, but I've spent over 4 years trying different cable designs and geometries and this design the best to date.
Also see my power cables...
http://image99.net/blog/files/4127b5fe2694586e383104364360373b-74.htmlIf you are not into DIY I would urge you to try the KLE products - they are stellar products - I 've reviewed most of them and found them all to deliver performance far above all of the much more costly competition that I have tried
Don't just take my word for it - just google "KLE Innovations reviews" and read other reviews for yourself
KLEI products elevated the performance of my 5i - they can do the same for yours
Hope that helps - Steve